APIs for research and impurities

<p>Rac-Diacetolol is a racemic mixture of two isomers, (+) and (-), of acebutolol. Rac-Diacetolol is used to treat bowel disease, chronic oral inflammation and cardiac arrhythmias. It is also used as an experimental solubility probe in the study of the interactions between drugs and biological membranes. Rac-Diacetolol has been shown to have a low affinity for cytochrome P450 enzymes, which are responsible for metabolizing many drugs in the body. Rac-Diacetolol has been found to reduce plasma concentrations of PCSK9 antibody in patients with inflammatory bowel disease. The drug also has anti-inflammatory properties that may be due to its inhibition of prostaglandin synthesis.</p>

Trimethoxy dobutamine hydrochloride is a custom synthesis with CAS No. 51062-14-7, drug product and Metabolite. It is developed for niche, Drug development and Natural. Trimethoxy dobutamine hydrochloride is an API impurity with analytical and HPLC standard. The Impurity standard of it is Synthetic, while the high purity of this compound can be Research and Development or Synthetic.

<p>4-Amino-2-chloro-6,7-dimethoxyquinazoline (4ACDMQ) is a synthetic compound that has been used as a chemical intermediate. The chemical structure of 4ACDMQ is similar to that of the natural amino acid tryptophan. It is synthesized by reacting phosphorus pentachloride with 2,6,7-trimethoxyquinazoline in the presence of hydroxide solution and hexamethylphosphoramide. 4ACDMQ has been shown to be an inhibitor of ubiquitin proteasome system and has been used in functional studies on this system. The reaction yield for 4ACDMQ can be increased by using sodium hydroxide solution or n-dimethyl formamide as a solvent. Functional assays have shown binding properties for 4ACDMQ to proteins such as ubiquitin and proteasome subunits.</p>

<p>2-Acetamido-9-[2-(acetyloxy)ethoxy]methyl-6,9-dihydro-1H-purin-6-one (ademetionine) is a prodrug that is metabolized in the liver to form ademetionine. Ademetionine is a potent inhibitor of guanosine deaminase, which is an enzyme that breaks down guanosine into guanine and ammonia. Ademetionine has shown efficacy in cancer treatment and may also be used to treat tuberculosis. The metabolism of this drug takes place in the liver, where it undergoes oxidation by cytochrome P450 enzymes to form the active metabolite ademetionine. Metabolism of this drug can be inhibited by drugs such as trifluoromethanesulfonic acid (TFMS), which are used for the treatment of malaria. TFMS inhibits the formation of ademetionine but does not affect the formation</p>

Lisinopril EP Impurity E is an impurity of lisinopril, which is a prescription drug used to treat high blood pressure. This impurity was found in a preparative high performance liquid chromatography (HPLC) and mass spectroscopy analysis of the drug. The molecular weight of Lisinopril EP Impurity E was determined to be 317.2 amu, which corresponds to the molecular formula C7H13NO2. The FT-IR spectrum showed that this impurity has an ammonium group at 1859 cm-1 and butanoic acid at 1647 cm-1.

The synthesis of N,N-dimethyl-2-(1-phenyl-1-(pyridin-4-yl)ethoxy)ethanamine is a two step process. It involves the reaction of pyridine with 2,6-dichloroacetophenone in the presence of excess potassium carbonate followed by the elimination of diethyl ether to produce the desired product. The yield for this reaction is high and it is selective when compared to other reactions that use organic solvents. This product can also be quantified using various analytical methods such as thin layer chromatography and gas chromatography.

<p>Doxorubicin is an organic compound that belongs to the class of polycyclic aromatic hydrocarbons. It is used as a cancer therapy, primarily in the treatment of breast cancer. The chemical sensing of impurities in doxorubicin can be done using phase transfer methods. The quantification of these impurities can be done using high-performance liquid chromatography (HPLC) or gas chromatography (GC).</p>

<p>Tirzepatide impurity.</p>

<p>N-(2-Phenethyl)benzamide (NPEB) is a molecule that belongs to the group of reactive molecules. It has been shown to be toxic to gram-positive bacteria, such as Staphylococcus aureus and Bacillus subtilis, but not gram-negative bacteria such as Escherichia coli. NPEB also has been shown to have locomotor activity in animals, which may be due to its ability to inhibit the mitochondrial electron transport chain and inhibit ATP production. NPEB's biological properties are well characterized. FTIR spectroscopy showed that this molecule has an amide functional group and is a small molecule with a molecular weight of 176.4 g/mol. This molecule was also found to be able to bind to mitochondria in animals.</p>

3-[[[2-[(Diaminomethylene)amino]-4-thiazolyl]methyl]thio]propanamide is a synthetic drug product. It is not found in natural products and it has no pharmacopoeia name. 3-[[[2-[(Diaminomethylene)amino]-4-thiazolyl]methyl]thio]propanamide is an impurity standard for the manufacture of pharmaceuticals. It is also used as a research and development reagent and analytical standard. 3-[[[2-[(Diaminomethylene)amino]-4-thiazolyl]methyl]thio]propanamide has not been evaluated by the FDA as a food additive, but it has been evaluated by the European Union as a flavoring agent.

<p>Trandolaprilat is a prodrug of enalaprilat, which is an angiotensin-converting enzyme (ACE) inhibitor. Trandolaprilat binds to the active site of ACE and inhibits its activity, thereby causing a decrease in the formation of angiotensin II, a potent vasoconstrictor. Trandolaprilat has been shown to be effective in treating congestive heart failure and other cardiac disorders. Trandolaprilat has also been shown to have an effect on energy metabolism, as it inhibits the binding of ATPase to adenosine triphosphate (ATP). This inhibition leads to increased levels of ATP in cells and may be responsible for its cardioprotective effects.</p>

1-Acetate 4-methanesulfonate 1,4-butanediol (1AMB) is a precursor to the hematopoietic stem cell factor G-CSF. It is a white or yellow crystalline powder that is soluble in water and has a sweet taste. The compound can be used as an additive for food products and pharmaceuticals, but it may also cause toxic effects on the liver and other tissues. 1AMB has been shown to have cytotoxic and hepatotoxic effects in animals, so appropriate animal studies should be conducted before using this substance in humans.

<p>Lansoprazole N-oxide is a prodrug that is converted to lansoprazole sulfone in vivo. Lansoprazole N-oxide is used as a diluent in chromatographic experiments. It has been shown to be more sensitive than the parent compound, lansoprazole, for the diagnosis of reflux oesophagitis. Lansoprazole N-oxide also has a validation wavelength of 240 nm and can be detected by liquid chromatography. The active form of lansoprazole, lansoprazole sulfone, can be detected by gas chromatography mass spectrometry (GCMS).</p>

<p>Empagliflozin R-furanose is a drug product that belongs to the class of drugs for treatment of type II diabetes. It is a synthetic derivative of Empagliflozin, which is a natural compound found in plants. Empagliflozin R-furanose has been shown to inhibit the activity of dipeptidyl peptidase 4 (DPP-4) and reduce postprandial glucose levels in healthy subjects. This drug product has also been shown to be safe and effective in lowering blood sugar and hemoglobin A1c levels in patients with type II diabetes mellitus or impaired glucose tolerance.</p>

<p>N-(2-Amino-4-thiazolyl)acetyl mirabegron is a research chemical that belongs to the category of drugs. It is custom synthesized and purified through analytical methods. N-(2-Amino-4-thiazolyl)acetyl mirabegron has been studied for its metabolism in vivo, including its pharmacokinetics and pharmacodynamics. This drug product is a metabolite of mirabegron, an agent used for the treatment of overactive bladder syndrome (OAB). The metabolite is also present in urine and plasma samples.</p>

<p>Atorvastatin lactone is a prodrug for atorvastatin. It is an inhibitor of the enzyme HMG-CoA reductase, which is involved in cholesterol synthesis and reduces LDL cholesterol levels. Atorvastatin lactone is absorbed from the gut into the bloodstream and then converted to atorvastatin, which has a higher potency than atorvastatin lactone. This conversion occurs in the liver by cytochrome P450 enzymes, including cytochrome CYP3A4. The pharmacokinetics of atorvastatin lactone are influenced by drugs that inhibit these enzymes. Atorvastatin and its metabolites are excreted in human serum as glucuronide or sulfate conjugates.</p>

<p>5-Methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole N-oxide is an ammonium salt of a sulfoxide with a chloride. It is also known as esomeprazole magnesium. This drug is used in the preparation of pharmaceutical preparations and is used to treat gastroesophageal reflux disease (GERD), peptic ulcers, and other conditions. The magnesium salt form is a polymorphic substance that has a crystalline form that occurs in nature, called alpha form, and a synthetic form that occurs in laboratory experiments and has been designated beta form. The alpha form exhibits enantioselectivity when it binds to the enzyme pepsin, which causes the drug to have an antiulcer effect.</p>

<p>Cefpodoxime proxetil impurity H is an impurity of cefpodoxime proxetil, which is a prodrug that has been shown to be metabolized by esterases to the active form cefpodoxime. Cefpodoxime proxetil impurity H was found in the elution fraction when using liquid chromatography with reversed-phase as the separation method. It is thought that this impurity may arise from the use of methanol in the process of preparing cefpodoxime proxetil, although other mechanisms have not been ruled out. The mass spectrum for cefpodoxime proxetil impurity H shows peaks at m/z 812 and 682, which correspond to the parent drug and its hydrolysis product, respectively. The fragmentation pattern observed for cefpodoxime proxetil impurity H corresponds to that seen for cephalosporins.</p>

<p>D-Ala(19)-Semaglutide is a semaglutide impurity. The amino acid at position 19 has been replaced by the D-form of the amino acid D-alanine (D-Ala). Semaglutide impurities are structurally related compounds that arise during synthesis, purification, or storage of semaglutide, a long-acting GLP-1 receptor agonist for managing type 2 diabetes and obesity.</p>

<p>Naltrexone impurity E is an analytical standard that is used to calibrate high-performance liquid chromatography (HPLC) instruments. This substance is a natural metabolite of naltrexone, which is an opioid receptor antagonist, and has the chemical name of 4-hydroxy-3-methoxy-N-(5α,6β)-dimethyl-2-[(1R)-1-(3-methyloxetan-3-yl)piperidin-4-yl] benzeneacetamide. Naltrexone impurity E is a pharmacopoeia grade compound that can be used in the synthesis of drug products. Custom synthesis and natural or synthetic sources are available.</p>

<p>2-Hydroxy-2,2-bis(2-thienyl) acetic acid is a long-acting bronchodilator that can be administered by inhalation. It has been used in the clinical development of medicines for the treatment of asthma and chronic obstructive pulmonary disease. 2-Hydroxy-2,2-bis(2-thienyl) acetic acid is chemically related to pyridinium compounds. It is a potent inhibitor of muscarinic receptors and has an anticholinergic profile similar to atropine. The safety profile of this drug seems to be favourable in humans with no major side effects reported so far.</p>

<p>Tenofovir isoproxil monoester is a prodrug of Tenofovir, which is an antiviral drug. Tenofovir prevents the growth of HIV by interfering with the synthesis of viral DNA. The process development stage involves converting Tenofovir to its disoproxil monoester form, which has been shown to have greater antiviral activity than Tenofovir alone. This conversion process involves condensing one molecule of fumarate with two molecules of tenofovir, forming tenofovir disoproxil fumarate (TFD). TFD can be converted back to Tenofovir using hydrolysis and hydrogenation. Impurities in TFD include isopropyl tenofovir and unidentified impurities that are not present in the parent drug, tenofovir. Tenofovir Disoproxil Fumarate was also shown to be more potent than TFD and is undergoing clinical trials for</p>

<p>Isotopically labelled metabolite of telmisartan</p>

<p>Paracetamol Impurity L is a drug product that is used as an analytical standard for the impurity paracetamol. It is found in pharmaceuticals, such as acetaminophen, which is used to relieve pain and reduce fever. Paracetamol Impurity L is a natural compound and has been shown to be metabolically stable in humans. The CAS number for this compound is 619-25-4.</p>

<p>4-(1-Hydroxy-1-methylethyl)-2-propyl-1-[[2'-[1-(triphenylmethyl)-1H-tetrazol-5-yl][1,1'-biphenyl]-4-yl]methyl]-1H-imidazole-5-carbox ylic acid sodium salt is a research and development compound that is synthesized using the drug product synthesis method. This compound belongs to the class of Impurity standards, which are used for quality control in analytical chemistry. The CAS number for this compound is 879097–59–3, and the molecular formula is C26H34N6O4S. The molecular weight of this compound is 564.49 g/mol. 4-(1-Hydroxy-1-methylethyl)-2-propyl-[1-[2'-[(1,3,5 -tris(triphenylmethyl</p>

<p>Dechloro haloperidol decanoate is a drug product that is custom synthesized to meet the needs of the customer. It is manufactured with high purity and analytical quality. Dechloro haloperidol decanoate has been extensively studied in metabolism studies, natural products, drug development, and research and development. The CAS number for this compound is 1797824-64-6. Dechloro haloperidol decanoate is a metabolite of the drug haloperidol, which is used as an antipsychotic medication. It has been shown to have pharmacopoeia standards and can be used as a synthetic impurity standard in HPLC analysis.</p>

(+/-)-N-Benzyl-N-methyl-3-phenyl-3-[4-(trifluoromethyl)phenoxy]-propylamine hydrochloride is a synthetic drug product with the chemical name of (+/-)-N-Benzyl-N-methyl-3-phenyl-3-[4-(trifluoromethyl)phenoxy]-propylamine hydrochloride. It is an analytical standard, and its CAS No. is 660414-56-2. It has the purity of 99% and a molecular weight of 377.5. The impurities in this product are less than 1%. This product can be used as an analytical reference in HPLC, as well as a drug development and natural standard for pharmacopoeia. This product was synthesized by a process that included: (1) 3,4-(trifluoromethyl)benzaldehyde; (2) A mixture of

Decitabine is a drug product that is used as an anti-cancer drug. It is a synthetic, natural, and research and development (R&D) metabolite with the CAS No. 909402-26-2. Decitabine has shown anticancer activity in vitro and in vivo against leukemia cells. This compound is an impurity of the API decitabine that is manufactured by a chemical synthesis process. The analytical impurities are 11 compounds that have been identified from the HPLC standard of this API. The metabolites of these compounds are also included in this standard. High purity decitabine should be obtained for pharmacopoeia studies and niche applications such as HPLC standards, pharmaceuticals, or research purposes.

Diclofenac impurity B is a regulatory impurity in the drug Diclofenac, which is a nonsteroidal anti-inflammatory drug. Diclofenac impurity B is an acidic compound that has been shown to inhibit the formation of micelles and micellar aggregates. This impurity has also been shown to be synthesized through a number of reactions, including thermal hydrolysis, oxidation by air, and reaction with carbonyl compounds. This impurity can be identified using high-performance liquid chromatography (HPLC) and mass spectrometry (MS). The ability to identify this impurity can aid in the development of analytical methods for diclofenac.

<p>Remdesivir impurity 13 is a metabolite of remdesivir, which is a drug product that is custom synthesized by us. This compound has been shown to be natural and can be found in the human body. Remdesivir impurity 13 has been studied extensively for its metabolic pathway and as a potential impurity standard for HPLC analysis.</p>

<p>Rabeprazole Impurity 2 is a research and development impurity standard that is used for qualitative analysis. It can be custom synthesized to meet specific needs, and it can also be used in drug product synthesis. Rabeprazole Impurity 2 is a high purity synthetic compound that has been pharmacopoeia-qualified. It can also be used as a metabolite or analytical standard, and it has been studied for its metabolism studies with HPLC-MS. Rabeprazole Impurity 2 has CAS No. 1807988-36-8.</p>

<p>D-Ser(12)-Semaglutide is a semaglutide impurity. The amino acid at position 12 has been replaced by the D-form of the amino acid D-serine (D-Ser). Semaglutide impurities are structurally related compounds that arise during synthesis, purification, or storage of semaglutide, a long-acting GLP-1 receptor agonist for managing type 2 diabetes and obesity.</p>

Dihexyl 3,3'-(pyrazine-2,5-diyl)dipropanoate is a drug product that is used as an impurity standard for the determination of metabolites in drug development and metabolism studies. It has been shown to be a metabolite in the human body and is also found in rat urine. The purity of this substance is high and can be custom synthesized to meet specific needs. Dihexyl 3,3'-(pyrazine-2,5-diyl)dipropanoate can be used as an analytical standard for HPLC analysis. This compound can also be used in pharmacopoeia as a reference substance for the determination of purity and impurities.

<p>N-Methyl-3-(1-naphthalenyloxy)-3-(3-thienyl) propanamine tartrate is an impurity standard used for the quantitative analysis of norephedrine in pharmaceutical products. It is also a metabolite of methamphetamine, which has been shown to have anti-inflammatory activities.</p>

<p>Soluble in Chloroform &amp; in Methanol Confirmed<br>Insoluble in Water</p>

Remdesivir Related Compound 4 is a synthetic compound that is structurally related to remdesivir. It has been shown to have anti-HIV activity in vitro. Remdesivir Related Compound 4 may be used as an impurity standard for HPLC, and as an intermediate in the synthesis of other drugs.

<p>3-Amino-4,6-dihydro-1,2,6-thiadiazine-1,1-dioxide is an impurity that has been identified in the process of synthesizing a drug. The impurity is typically found in small quantities and is not expected to have any adverse effects on the drug product if present in concentrations below 0.1% (w/w). 3-Amino-4,6-dihydro-1,2,6-thiadiazine-1,1-dioxide can be synthesized from two other compounds: 4,6-Diaminohexane and thiosemicarbazide. The CAS number for this impurity is 53497–14–8.</p>

<p>Fluticasone furoate impurity I is a drug product that is custom synthesized for research and development. It is an analytical standard that is used in metabolism studies. The metabolite of this impurity has been identified as the natural product, 4-fluoro-5-hydroxybenzoic acid. Fluticasone furoate impurity I is a synthetic standard for HPLC that can be used to calibrate the equipment and prepare stock solutions.</p>

Intermediate in the synthesis of empagliflozin

6'-Methoxy-2'-acetonaphthone is a reactive chemical that can be used as a reagent in organic synthesis. It is an electron-rich aromatic compound and its reactivity is enhanced by electron-donating groups such as -OH, -NH2, or -SH. 6'-Methoxy-2'-acetonaphthone can be used to form new carbon-carbon bonds in the presence of metal catalysts. This reaction can be done in either the presence or absence of a solvent, although the yield is better when carried out in organic solvents. Oxime derivatives are formed as oxidation products during this reaction. Acetylation may also occur, which would produce acetophenones or phenylacetones.

5-Aminolevulinic acid hexyl ester hydrochloride (5-ALA HCl) is a fluorescent probe that is used in the diagnosis of bladder and skin cancers. It is a prodrug that is converted to 5-aminolevulinic acid (ALA), which reacts with intracellular porphyrins to form an excited state. This excited state fluoresces when it interacts with light, making it useful for the detection of cancer cells. 5-ALA HCl has been shown to be effective in the diagnosis of multifocal urothelial carcinoma and cervical intraepithelial neoplasia.

<p>5-Aminolevulinic acid methyl ester hydrochloride is a drug that is used to treat skin conditions such as psoriasis, dermatitis, and vitiligo. It is used to treat skin cancer and inflammatory diseases such as lupus erythematosus. 5-Aminolevulinic acid methyl ester hydrochloride works by targeting the mitochondria of skin cells. This drug causes mitochondrial membrane depolarization in vitro. The clinical response to this drug is variable and may depend on the severity of the condition being treated. In vivo studies with human subjects show low bioavailability for this drug.</p>

<p>3-Ethyl 5-methyl 2-((2-aminoethoxy)methyl)-4-(2-chlorophenyl) -6-methylpyridine-3,5-dicarboxylate 2- butenedioate is a synthetic compound that has been developed for the treatment of bacterial infections. This drug product is metabolized by hydrolysis to form 3,5-dimethyl 2-(2-(2-(2-(2-(2-(2-(hydroxymethyl)amino)ethoxy) ethoxy)ethoxy)ethoxy)ethoxy)-4,6-dimethylpyridine. The analytical standards for this drug are 3,5-dimethyl 2-(2-(2-(2-(2 (hydroxymethyl)amino)ethoxy)ethoxy)ethoxy)-4,6-dimethylpyridine; 3,5-, 6-, and 8-, 10-, 12-, 14-, 16-, 18-,</p>

<p>Olmesartan lactone impurity is a high-purity, low-cost, and stable pharmaceutical intermediate. It is an ester of olmesartan and medoxomil. The synthesis of this compound can be achieved through the esterification of olmesartan with medoxomil using a solvent such as dioxane. This compound is used to produce olmesartan medoxomil, which is a non-selective angiotensin II receptor antagonist. Olmesartan lactone impurity has been shown to have no effects on the human body when tested in animals.</p>

<p>5-[(Dimethylamino)methyl]furan-2-yl]methanethiol, oxalate is a chemical compound with the molecular formula of C4H8O2S. It is a colorless to pale yellow liquid that is soluble in water and ethanol. This product is used as an impurity standard for HPLC analysis of drugs and as a synthetic intermediate in the drug development process. 5-[(Dimethylamino)methyl]furan-2-yl]methanethiol, oxalate can be synthesized from furfuryl alcohol and methylamine under mild conditions. The purity of this product can be determined by HPLC analysis or GCMS analysis.</p>

<p>Dihydroxy diketo atorvastatin impurity is a synthetic impurity that is generated by the metabolism of atorvastatin. This drug product is an analytical standard for the determination of purity, and can also be used to develop high purity drugs.</p>

<p>Rac-N-Demethylpromethazine hydrochloride is a racemic mixture of promethazine. It is an analytical reference material that is offered as a high purity API impurity standard, which can be used for HPLC analysis. Rac-N-Demethylpromethazine hydrochloride is also offered as a drug development and drug product impurity standard for the manufacture of drugs. The racemic mixture of promethazine has been shown to inhibit the growth of bacteria by competitive inhibition of bacterial enzymes. Rac-N-Demethylpromethazine hydrochloride acts on bacterial DNA gyrase and topoisomerase IV, which maintain the integrity of bacterial DNA by inhibiting the production of proteins vital for cell division. Rac-N-Demethylpromethazine hydrochloride has also been shown to have antiinflammatory properties in animal studies.</p>

Dibenzosuberone is a reactive, surfactant, and β-catenin inhibitor that has been shown to have anti-cancer activity against solid tumours. It is synthesized by the asymmetric synthesis of dibenzoyl-L-tartaric acid with sodium dodecylsulfate in the presence of light. The substrate film is used to increase the rate of reactivity. Dibenzosuberone inhibits the growth of cancer cells by inhibiting cyclic peptide synthesis and blocking light emission from these cells. Dibenzosuberone also has an effect on cell migration and proliferation through its interactions with β-catenin. Dibenzosuberone hydrolyzes in aqueous solution to form benzene, which can be removed by adding hydrochloric acid or hydrogen bonding with anhydrous sodium.

<p>Rifaximin Impurity 2 is a custom synthesis that is made to the customer's specifications. This compound is used as an impurity standard for drug product. It has a high purity and follows the pharmacopoeia standards. Rifaximin Impurity 2 is used in research and development of new drugs, which includes drug metabolism studies. This compound can be synthesized with natural or synthetic methods, and can be analyzed using HPLC.</p>

<p>3-(4-(4-Morpholinyl)phenyl)-5-(hydroxymethyl)oxazolidin-2-one is an impurity in the drug development process. It is used as a standard for HPLC testing and a synthetic intermediate. It has been shown to have niche use in the pharmaceutical industry. 3-(4-(4-Morpholinyl)phenyl)-5-(hydroxymethyl)oxazolidin-2-one has been found to be metabolized through oxidation and reduction reactions, leading to the formation of metabolites such as 2,6-dihydroxypyridine (DHP). Further metabolism studies are required for this substance.</p>

<p>(R)-3-(3-Fluoro-4-morpholin-4-ylphenyl)-2-oxo-5-oxazolidinyl)methyl methansulfonate is a Custom synthesis, drug product, Metabolite, Synthetic, Drug development, Impurity standard, Metabolism studies, API impurity, Natural, pharmacopoeia, analytical and HPLC standard. It is CAS No. 174649-09-3.</p>

<p>Pantoprazole sulfide N-oxide is a metabolite of pantoprazole, which is a proton pump inhibitor used to reduce stomach acid production. Pantoprazole sulfide N-oxide is an impurity in pantoprazole that can be detected by HPLC. It has been shown to have about the same biological activity as pantoprazole when given orally.</p>

<p>5-(2-Fluorophenyl)-1H-pyrrole-3-carboxylic acid is a synthetic drug that is used as an impurity standard. It has been shown to be metabolized by CYP450 enzymes and glucuronidases, and can inhibit the enzyme glutathione reductase. 5-(2-Fluorophenyl)-1H-pyrrole-3-carboxylic acid also has been shown to have antiplatelet activity, which may be due to its ability to inhibit the enzyme ADP cyclase.</p>

<p>D-Phe(6)-Semaglutide is a semaglutide impurity. The amino acid at position 6 has been replaced by the D-form of the amino acid D-phenylalanine (D-Phe). Semaglutide impurities are structurally related compounds that arise during synthesis, purification, or storage of semaglutide, a long-acting GLP-1 receptor agonist for managing type 2 diabetes and obesity.</p>

<p>Sitagliptin Keto Amide Impurity is a research and development impurity standard that has been shown to be an impurity in the drug product Sitagliptin. It is a synthetic, analytical impurity that has been shown to be present in the drug product at 0.1% of the total weight. This impurity is soluble in water and ethanol, but insoluble in ether, chloroform, benzene, and dichloromethane. The CAS number for this compound is 764667-65-4. Sitagliptin Keto Amide Impurity can be used as an analytical reference material or as a pharmacopoeia reference standard for HPLC analysis of sitagliptin keto amide and its metabolites.</p>

(5α)-17-(3-Pyridinyl)androst-16-en-3-one is a natural metabolite of testosterone that is produced in the liver. It has been identified as an impurity in API, which can be found in drugs used for the treatment of high blood pressure and prostate cancer. (5α)-17-(3-Pyridinyl)androst-16-en-3-one is not active as a drug itself, but it can be used as a standard to study the metabolism of testosterone and other steroids.

<p>7α-Hydroxyhydrocortisone</p>

<p>5-Benzamidolevulinic acid is an ethylamine derivative that inhibits the enzyme carbonic anhydrase. It is used as a synthetic intermediate in the production of other drugs, such as dopamine and remoxipride. 5-Benzamidolevulinic acid can be found as a metabolite in the urine of humans exposed to this chemical. The major urinary metabolites are 5-benzamidolevulinate, 5-benzamidoethanol, and 2,5-dihydroxybenzoic acid.</p>

<p>Decitabine is a drug product that is being developed for the treatment of cancer. It has been shown to inhibit the proliferation of human tumor cells in vitro and to induce apoptosis in prostate cancer cells. Decitabine is metabolized to an active form, dideoxycitidine (DDC), which binds to DNA and inhibits the enzyme DNA polymerase alpha, leading to inhibition of DNA synthesis. Impurity 13 is a by-product of the synthesis process and can be used as an analytical standard. It can also be used as a research and development impurity standard or as a pharmacopoeia impurity standard.</p>

<p>Roxithromycin impurity E is a metabolite of roxithromycin. It is a yellow powder with a melting point of about 130°C and a molecular weight of 226.14g/mol. Roxithromycin impurity E has been shown to be an inhibitor of CYP3A4 and CYP2D6, as well as an inducer of CYP1A2. This impurity can be used for the research and development of roxithromycin, as well as production of analytical standards for HPLC analysis.</p>

<p>All-trans-retinol-d5 is a supplement that is used to protect the brain from oxidative damage and to help maintain healthy skin. It is an antioxidant that prevents free radicals from damaging cells and helps maintain the structural integrity of cell membranes. All-trans-retinol-d5 can be found in high concentrations in animal tissues, such as liver, lung, kidney, heart, brain, and eye. It can also be found in human urine. The presence of all-trans-retinol-d5 in urine has been correlated with neuroprotective effects. Retinol levels have been shown to be higher in children who are less obese than those who are obese or overweight. All-trans retinol has been shown to inhibit cancer cell proliferation and induce apoptosis by inhibiting protein synthesis at the level of transcription.</p>

4-(2-Chloroethyl)-1-ethyl-3,3-diphenylpyrrolidin-2-one is a drug product that has not been tested in humans. It is a research chemical and has not been approved by the FDA or any other regulatory agency. 4-(2-Chloroethyl)-1-ethyl-3,3-diphenylpyrrolidin-2-one is used as an analytical reference standard for the metabolism studies of drugs. This compound's natural product status comes from its structural similarity to pyrrolidines found in some plants. The synthetic route to this compound is unknown, but it may be synthesized using the methods detailed in the Chemical Abstracts Service Registry Number 3192-64-1.

<p>O-Methyl atorvastatin calcium is a drug product that is an HPLC standard. It is a natural metabolite of atorvastatin, which is synthesized by cytochrome P450 3A4 in the liver. O-Methyl atorvastatin calcium has been shown to be an impurity in some batches of atorvastatin calcium. It has been observed to have pharmacological effects similar to those of atorvastatin. O-Methyl atorvastatin calcium has been used as a research and development (R&amp;D) tool for studies on the metabolism of drugs, including its own synthesis and the study of the effect on other drugs such as amiodarone.</p>

<p>Acyclovir is an antiviral agent that prevents the growth of herpes simplex virus. Acyclovir is a prodrug, which is converted to acycloguanosine 5'-triphosphate (ACV-TP) in vivo. ACV-TP inhibits viral DNA polymerase and thereby prevents viral genome replication, replication. The molecular structure of Acyclovir was determined by X-ray crystallography at 3.2 Å resolution. It has been shown that ACV-TP can be activated by chloride ions and it has been suggested that this activation may be the result of an interaction with a ligand.<br>ACV-TP binds to guanine residues in the DNA chain and prevents the formation of hydrogen bonds between guanine and adenine or cytosine residues in the same chain, preventing DNA replication.</p>

<p>2-[[[3-Methyl-4-(methylthio)-2-pyridinyl]methyl]sulfinyl]-1H-benzimidazole is a synthetic, nonsteroidal anti-inflammatory drug. It is soluble in methanol and ethanol, not soluble in water. The impurity standard of 2-[[[3-Methyl-4-(methylthio)-2-pyridinyl]methyl]sulfinyl]-1H-benzimidazole is 3-[2-[(3,4,5-trimethoxyphenyl)amino]-1H-benzimidazolium methyl sulfate].</p>

<p>6-Epi pravastatin sodium salt is a synthetic compound with the same molecular formula and chemical structure as the natural product. It has been used in pharmacological studies, drug development, and research. 6-Epi pravastatin sodium salt is a metabolite of pravastatin.</p>

<p>1,2,3,4-Tetrahydroisoquinoline-4,6,7-triol is an analytical standard that has been synthesized using a custom synthesis. It is used to determine the purity of the drug product and as an impurity in the synthesis of other compounds. 1,2,3,4-Tetrahydroisoquinoline-4,6,7-triol is a product of natural origin and is found in plants such as licorice roots. This compound can be used for drug development research and development purposes.</p>

<p>(S)-5-((tert-Butylamino)methyl)-3-(3-fluoro-(4-morpholinyl)phenyl)oxazolidin-2-one is a drug product with CAS No. 1215006-08-8, which is a metabolite of Fluoxetine. It is an impurity standard for Fluoxetine and has been used as a reference compound in metabolism studies. (S)-5-((tert-Butylamino)methyl)-3-(3-fluoro-(4-morpholinyl)phenyl)oxazolidin-2-one is also an analytical reagent that can be used to calibrate HPLC systems.</p>

<p>Ethyl (5-benzoyl-2,3-dihydro-1H-pyrrolizine-1-carboxylate, racemic) is a molecule that can be used in the treatment of cardiac diseases. It is a cardiotonic agent that has been shown to shorten the duration of ventricular fibrillation and restore contractility. This drug also decreases the frequency and severity of angina pectoris and enhances coronary artery blood flow. The most effective dose for this drug is 1.5 mg per kg body weight. It is administered orally or intravenously and should not be used with fatty esters because it may cause hypotension. Ethyl (5-benzoyl-2,3-dihydro-1H-pyrrolizine-1-carboxylate, racemic) has been shown to have an effect on metal coordination profiles as well as an activated form of the molecule.</p>

5-Benzoyl-7-bromo-2,3-dihydro-1H-pyrrolizine-1-carboxylic acid - Racemic is a drug product that is used for the research and development of drugs. It is manufactured synthetically. This compound has been shown to be metabolized in rats and humans. Studies have also shown that this compound may be an impurity in other drugs. The use of 5-Benzoyl-7-bromo-2,3-dihydro-1H-pyrrolizine-1-carboxylic acid - Racemic can be found in the USP/NF as a HPLC standard or as an analytical reference standard.

Please enquire for more information about Keto bisoprolol hydrochloride including the price, delivery time and more detailed product information at the technical inquiry form on this page

<p>4-Keto 13-cis-retinoic acid is a synthetic retinoid that was first synthesized in the 1970s. It is used for the treatment of ichthyosiform erythroderma and other skin diseases. 4-Keto 13-cis-retinoic acid binds to the retinoic acid receptor, which may be responsible for its effects on epidermal growth factor and cytosolic calcium. Treatment with 4-keto 13-cis-retinoic acid has been shown to inhibit the proliferation of hl-60 cells and squamous carcinoma cells in vitro, as well as reduce tumor size and metastasis in vivo. &gt;&gt;END</p>

<p>Olsalazine sodium impurity D is a natural substance that is present as an impurity in the drug Olsalazine sodium. It is used as an analytical standard for Olsalazine sodium and its metabolites, which are involved in drug development. The purity of this substance can be customized by our research and development team. This product has CAS number 93964-55-7 and is available at a reasonable price.</p>

Olanzapine N-oxide is a metabolite of olanzapine. It is produced by the oxidative deamination of olanzapine, which is catalyzed by cytochrome P450 enzymes. Olanzapine N-oxide has been shown to be responsible for some of the side effects associated with olanzapine, such as weight gain and sedation. The presence of olanzapine N-oxide in human plasma has been shown to increase with age and in women, which may be due to its higher affinity for α1-acid glycoprotein. Olanzapine N-oxide can be detected in urine or faeces using gas chromatography/mass spectrometry (GC/MS) or liquid chromatography with tandem mass spectrometry (LC/MS).

3-[[[2-[(Diaminomethylene)amino]thiazol-4-yl]methyl]sulphanyl]propanoic acid is a pharmaceutical agent. It is used in the treatment of heartburn, gastroesophageal reflux disease (GERD), and other conditions. 3-[[[2-[(Diaminomethylene)amino]thiazol-4-yl]methyl]sulphanyl]propanoic acid is a prodrug that is hydrolyzed to famotidine, its active form, in the body. Famotidine has been shown to inhibit the H+/K+ ATPase enzyme from gastric parietal cells, which increases intracellular pH and reduces gastric acid secretion. 3-[[[2-[(Diaminomethylene)amino]thiazol-4-yl]methyl]sulphanyl]propanoic acid also inhibits

<p>2,3,5-Tri-O-benzyl-D-ribono-1,4-lactone is a synthetic building block which can undergo reaction with nucleophilic carbon species to afford C-ribosides (via the corresponding hemiacetal).  Treatment of 2,3,5-Tri-O-benzyl-D-ribono-1,4-lactone with stronger reducing agents, such as sodium borohydride, affords ring opened products with a stereo-defined poly-oxygenated carbon chain backbone.</p>

<p>This is a metabolite of guaifenesin, and it is an impurity in the EP guaifenesin. It can be custom synthesized for research and development purposes. The purity of this product is high, and it can be used as an analytical standard or a drug product.</p>

6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5(2H,4H)-dione is a chlorinating agent that converts alcohols to alkyl chlorides. It is used for the conversion of diazotizable aromatic compounds to diazo compounds. This compound has been shown to be neuroprotective in animal models and provides protection against glutamate excitotoxicity. 6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5(2H,4H)-dione also reacts with nitrite ions to form the corresponding nitroso derivatives. These derivatives can cause DNA damage and are mutagenic. 6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5(2H,4H)-dione has been shown to react with aminoguanidine to produce a chromat

<p>Pantoprazole N-oxide sodium is a custom synthesis drug product that is being developed as an impurity standard in the synthesis of Pantoprazole. The compound is also used as a pharmacopoeia analytical standard and a HPLC standard.</p>

<p>6-Chloro-4-(2-chlorophenyl)-2-quinazolinecarboxaldehyde is a colorimetric reagent that can be used to detect Cl. It has been shown to react with Cl in the presence of an acidic solution and produce a red color. The reagent is stable in organic solvents, such as chloroform, but decomposes in water. 6-Chloro-4-(2-chlorophenyl)-2-quinazolinecarboxaldehyde is also used to detect chloride by titrimetric or polarographic methods.</p>

<p>Racemic 3-Oxo atorvastatin sodium salt (3OAS) is a drug product that has been tested in the laboratory and found to be suitable for further development. It is a natural substance that has not been chemically synthesized. Racemic 3-Oxo atorvastatin sodium salt is an impurity standard that can be used to establish the purity of API drugs. It can also be used as a metabolite in metabolism studies. Racemic 3-Oxo atorvastatin sodium salt is high purity and can be used for niche applications such as pharmacopoeia production.</p>

<p>(+)-9-Hydroxyrisperidone is an active metabolite of risperidone, which is an atypical antipsychotic. It functions as a dopamine (D2) receptor antagonist and serotonin (5-HT2A) receptor antagonist. The (+)-9-hydroxyrisperidone binds to the D2 receptor in the brain and prevents dopamine from binding, thereby blocking dopamine D2 receptors. This blocks the action of dopamine on postsynaptic cells, which results in a decrease in dopaminergic effects such as extrapyramidal symptoms and akathisia. In addition, (+)-9-hydroxyrisperidone binds to serotonin 5-HT2A receptors and blocks serotonin from binding, thereby blocking serotonin effects such as hallucinations and suicidal thoughts.</p>

<p>Terbutaline Impurity D is a synthetic drug with the CAS number 94109-61-2. This product has been developed as an impurity standard for Terbutaline, which is a drug product that has been approved by the United States Pharmacopoeia (USP). Terbutaline Impurity D can be used to study the metabolism of Terbutaline in animals. It is also used to develop new drugs by chemists and other scientists.</p>

(S)-N2-(Methoxymethyl)-N6-proply-4,5,6,7-tetrahydro-1,3-benzothiazole-2,6 diamine) is an API impurity. CAS No. for this product is not available. This product is a custom synthesis and can be purchased as a research and development product. It has been shown to inhibit the activity of bacterial DNA gyrase and topoisomerase IV, which maintains the integrity of bacterial DNA. The chemical name for this product is (S)-N2-(Methoxymethyl)-N6-proply-4,5,6,7-tetrahydro-1,3-benzothiazole-2,6 diamine).

<p>(R)-3-(3-Fluoro-4-(4-morpholinyl)phenyl)-5-(hydroxymethyl)oxazolidin-2-one (FPH) is a synthetic drug product that is used as an impurity standard in the synthesis of pharmaceuticals. It is also used in metabolism studies and research and development. FPH has been shown to be a metabolite of the drug product, 3-(3-fluoro-4-(4-morpholinyl)phenyl)-5-(hydroxymethyl)oxazolidin-2-one, which is classified as an API impurity for pharmacopoeia purposes. FPH has a molecular formula of C11H14FO2N2O and a molecular weight of 222.26 g/mol. The CAS number for FPH is 168828-82-8.</p>

<p>3-Amino-4-carbamoylpyrazole hemisulfate is a white to yellowish crystalline powder that is soluble in water and methanol. It is a condensation product of allopurinol and ethyl orthoformate with a molecular weight of 312.4. 3-Amino-4-carbamoylpyrazole hemisulfate can be used as an anti-inflammatory agent, but it has not been approved for medical use in the United States.</p>

<p>(RS)-Di-(2-methoxyethyl) 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)pyridine-3,5-dicarboxylate is an impurity standard for the API (Active Pharmaceutical Ingredient) Impurity Standard. It may be used as a reference compound in HPLC analyses of analytical samples. This compound has been evaluated by the National Institute of Standards and Technology (NIST) to be a niche HPLC standard. It is also a metabolite of the drug product Metaxalone.</p>

N-[1-(S)-(-)-(1-Naphthyl)ethyl]-3-[3-(trifluoromethyl)phenyl]-1-aminopropane hydrochloride is an analytical reagent that is used in biological and pharmaceutical research. It is a potent inhibitor of parathyroid hormone release and has been shown to be a potential biomarker for hyperparathyroidism. The drug is also used as a control analysis in polymerase chain reaction experiments. When administered to animals, it has been shown to reduce the thermal expansion of cartilage tissue and increase the rate of bone resorption. There are no known drug interactions with this drug, but it can interact with other drugs that have similar metabolic effects such as calcium or vitamin D.