APIs for research and impurities

<p>Cefuroxime (Cephuroxime) is a second-generation cephalosporin antibiotic with antimicrobial activity for the study of soft tissue infections.</p>

<p>Stability Hygroscopic<br>Applications A semi-synthetic analogue of Carminomycin with cytostatic activity.<br>References Mossman, T., et al.: J. Immunol. Methods, 65, 55 (1983), Janicke, R.U., et al.: J. Biol. Pharm., 273, 9357 (1998), Sidorova, T.A., et al.: J. Med. Chem., 21, 5330 (2002),<br></p>

<p>Applications Labelled Torsemide (T548750). Used as a diuretic.<br>References Lesne, M., et al.: In. J. Clin. Pharmacol. Ther. Toxicol., 20, 382 (1982), Brater, D.C., et al.: Clin. Pharmacol. Ther., 42, 187 (1987),<br></p>

<p>Applications A potentially related compound in cephalosporin antibacterial compounds. An isomer of Cefuroxime (C248050).<br>References Chavette, R., et al.: J. Med. Chem., 9, 741 (1966), Miyouchi, M., et al.: J. Chem. Pharm. Bull., 38, 1906 (1990), Sugioka, T., et al.: Chem. Pharm. Bull., 38, 1998 (1990),<br></p>

<p>Applications Intermediate in the preparation of Alfentanil.<br>References Kudzma, L., et al.: J. Med. Chem., 32, 2534 (1989),<br></p>

<p>Applications (S)-Equol and R-Equol are metabolites of the soy isoflavones Daidzein (D103500) and Genistein. Both have significant biological actions.<br>References Heinonen, S., et al.: Anal. Biochem., 274, 211 (1999), Setchell, K., et al.: J. Nutr., 132, 3577 (2002), Thigpen, J., et al.: Comp. Med., 53, 607 (2003), Yee, S., et al.: Food Chem. Toxicol., 46, 2713 (2008),<br></p>

<p>Applications Cardioselective β-adrenergic blocker. Antihypertensive; antianginal; antiarrhythmic (class II).<br>References Cuthbert, O.A., et al.: Br. J. Pharmacol., 43, 639 (1971), Singh, B.N., et al.: Drugs, 29, 531 (1985), Foster, R.T., et al.: Anal. Profiles Drug Subs., 19, 1 (1990),<br></p>

<p>Applications Rosuvastatin Anhydro Lactone, is an intermediate in the production of Rosuvastatin (R700500) derivatives.<br>References Martin, P., et al.: Clin. Ther., 25, 2215 (2003), Sakaeda, T., et al.: Pharm. Res., 23, 506 (2006),<br></p>

<p>Applications (1S,2S,5S)-4-[2-[2-(6,6-Dimethylbicyclo[3.1.1]hept-2-yl)ethoxy]ethyl]morpholine, is used for the synthesis of Pinaverium Bromide (P465000), a drug used for functional gastrointestinal disorders.<br>References Gan, Y., et al.: Shenyang Yaoke Daxue Xuebao, 25, 370 (2008); He, L., et al.: Huaxue Yanjiu Yu Yingyong, 20, 600 (2008);<br></p>

<p>Applications Indazolone derivative.<br></p>

<p>Applications A metabolite of Torsemide (T548750).<br>References Besenfelder, E., et al.: J. Pharm. Biomed. Anal., 5, 259 (1987), Vormfelde, S., et al.: Clin. Pharmacol. Ther., 76, 557 (2004),<br></p>

<p>Applications Azilsartan Amidoxime is an intermediate used in the preparation of azilsartan kamedoxomil for use as an angiotensin II receptor blocker. Azilsartan Impurity.<br>References Garaga, S., et al.: Org. Process Res. Dev., 19, 514 (2015); Sethi, M. K., et al.: Pharma Chemica, 7, 20 (2015)<br></p>

<p>Applications A psychotropic agent with anxiolytic, anticonvulsant, sedative and skeletal muscle relaxant properties. It is a precursor to the active substance Desmethyldiazepam (D291595).<br>References Ochs, H.R. et al.: J. Clin. Pharmacol., 24, 446 (1984); Takagi, H. et al.: Nip. Yakur. Zas., 66, 134 (1970);<br></p>

<p>Applications (Z)-2-Methoxyimino-2-furanacetic Acid Ammonium Salt is An intermediate in the preparation of Cephalosporin antibiotics and derivatives.<br> E3<br>References Nomura, H., et al.: J. Med. Chem., 17, 12 (1974); Fuzimoto, K., et al.: J. Antibiotics, 40, 370 (1987)<br></p>

<p>Stability Hygroscopic<br>Applications Disodium salt of Taurolithocholic Acid Sulfate, a metabolite of bile acids. Sulfation is a major metabolic pathway involved in the elimination and detoxification of bile acids (BAs).<br>References Kawamata, Y., et al.: J. Biol. Chem., 278, 9435 (2003); Alnouti, Y., et al.: Toxicol. Sci., 108, 225 (2009); Griffiths, W., et al.: J. Lipid Res., 51, 23 (2010); Huang, J., et al.: Xenobiotica, 2010, 40, 184 (2010);<br></p>

<p>Applications (R,S)-Equol is a human urinary metabolite of the soy isoflavones Daidzein (D103500).<br>References Heinonen, S., et al.: Anal. Biochem., 274, 211 (1999), Setchell, K., et al.: J. Nutr., 132, 3577 (2002), Thigpen, J., et al.: Comp. Med., 53, 607 (2003), Yee, S., et al.: Food Chem. Toxicol., 46, 2713 (2008),<br></p>

<p>Applications Benz[a]anthracen-3-ol is a derivative of the most potent carcinogenic hydrocarbon, 7,12-Dimethylbenz[a]anthracene (D464500), a highly potent carcinogen that is activated by microsomal enzymes to a diol epoxide metabolite that binds covalently to DNA in mammalian cells, leading ultimately to tumor induction. Benz[a]anthracen-3-ol is used in carcinogenesis studies relating to breast cancer.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Harvey, R. et al.: J. Org. Chem., 69, 2024 (2004); Harvey, R. et a;.: J. Med. Chem., 31, 154 (1988); Lee. H. et al.: J. Org. Chem., 51, 3501 (1986); Huggins, C., et al.: Proc. Nat. Acad. Sci. U.S.A., 58, 2253 (1967), Dipple, A., et al.: N. Cancer Res., 43, 4123 (1983);<br></p>

<p>Applications N-Methyl-p-toluenesulfonamide is an intermediate used in the synthesis of vicinal haloamino ketone derivative.<br>References Sun, H., et al.: Chem. Biol. Drug Design, 75, 269 (2010)<br></p>

<p>Stability Hygroscopic<br>Applications A metabolite of Azelastine (A808250).<br>References Heinemann, U. et al.: J. Chrom. B Anal. Tech. Biomed. Life Sci., 793, 389 (2003); Tasaka, K., et al.: Arzneim.-Forsch., 29, 488 (1979);<br></p>

<p>Stability Hygroscopic<br>Applications A metabolite of Daidzin, Daidzein and Puerarin.<br>References Griffiths, L., et al.: Biochem. J., 130, 141 (1972), Zhu, X., et al.: Acta Pharm. Sin., 14, 349 (1979), Powell, G., et al.: Drug Metab. Drug Interact., 6, 203 (1988), Bamforth, K., et al.: Eur. J. Pharmacol., 228, 15 (1992), Walle, T., et al.: Biochem. Pharmacol., 50, 731 (1995),<br></p>

<p>2-Methyl-10-(2-nitrophenyl)-10H-benzo[b]thieno[2,3-e][1,4]diazepin-4-amine is an analytical standard for HPLC. It is a research and development chemical and should be handled with care. 2-Methyl-10-(2-nitrophenyl)-10H-benzo[b]thieno[2,3-e][1,4]diazepin-4-amine is a drug development API impurity that can be found in the drug product. Impurities standards are available for this compound. The CAS number for 2 methyl 10 (2 nitrophenyl) 10H benzo [b] thieno [2,3 - e][1,4] diazepin 4 amine is 71437–05–9.</p>

<p>Amoxicillin EP impurity K is a research and development impurity standard. It is a synthetic ampicillin-derived beta-lactam antibiotic that is a metabolite of amoxicillin. Amoxicillin EP impurity K has been shown to be an inhibitor of bacterial protein synthesis, which may be due to its ability to inhibit the activity of ribosomes and 50S subunits. This product can be custom synthesized and is available at high purity. Amoxicillin EP impurity K is used in the manufacture of pharmaceutical products, such as tablets and capsules, for drug development.</p>

<p>Please enquire for more information about D-Ser32-Tirzepatide including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>Adefovir Dipivoxyl Impurity I is a white crystalline powder with a melting point of 232–234 °C. It is soluble in water, and insoluble in organic solvents. Adefovir Dipivoxyl Impurity I is used as an impurity standard for Adefovir Dipivoxyl and has been shown to be metabolized by CYP3A4 and UGT1A9. This impurity also has the potential to inhibit DNA synthesis in cells.</p>

3-O-Desmethyl amlodipine is a metabolite of the drug amlodipine. It has been shown to be formed in vivo and may contribute to the pharmacological activity of amlodipine, although its contribution is not well understood. 3-O-Desmethyl amlodipine has been used as an analytical standard for chemical purity testing of pharmaceuticals, and as an impurity standard for HPLC analysis.

<p>4-Amino-7-iodopyrrolo[2,1-f][1,2,4]triazine is an impurity standard of the drug product. It is a high purity synthetic compound with a niche in pharmacopoeia and drug development. 4-Amino-7-iodopyrrolo[2,1-f][1,2,4]triazine has been shown to be a metabolite of the natural product.</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>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>

Naltrexone Impurity F is a drug product that is an impurity standard for the analytical determination of Naltrexone in HPLC. It is a natural metabolite of naltrexone and has been shown to have pharmacological effects similar to those of naltrexone. Naltrexone Impurity F is used as an analytical reference material for the detection of naltrexone in pharmaceutical products.

<p>N-(((5S)-3-(4-(4-Morpholinyl)phenyl)-2-oxo-5-oxazolidinyl)methyl) acetamide is an impurity of the antibiotic linezolid. It is a contaminant that can be found in urine and blood samples. N-(((5S)-3-(4-(4-Morpholinyl)phenyl)-2-oxo-5-oxazolidinyl)methyl) acetamide has been shown to be amyloidogenic, meaning it can form plaques in the brain and lead to Alzheimer's disease.</p>

<p>N,N',N''-Tris(4-chlorobenzylideneimino)guanidine hydrochloride is an analytical standard used to determine the purity of a drug product. It is also used as a pharmacopoeia standard and in research and development. N,N',N''-Tris(4-chlorobenzylideneimino)guanidine hydrochloride is synthesized from 4-chlorobenzaldehyde and 1,2,3-triazole. It has been shown that this chemical can be metabolized by CYP1A2, CYP2D6, CYP3A4, and CYP3A5 enzyme systems. This chemical has not been found to have any impurities.</p>

<p>Intermediate in the synthesis of ribavirin</p>

<p>N-Acetylmemantine is a drug that inhibits the activity of acetylcholinesterase in the brain. It has been shown to inhibit cancer cell growth and induce apoptosis, as well as inhibit the reaction of hydrolysis of acetonitrile with hydrochloric acid in an organic solvent. N-Acetylmemantine is synthesized by heating ethylene in the presence of hydrochloric acid. The synthesis yields a white solid that consists mainly of N-acetylmethamphetamine. This drug interacts with cellular membranes, which may be due to its ability to react with cholesterol or phospholipids. The interaction leads to changes in membrane permeability, which can result in apoptosis.</p>

<p>Please enquire for more information about 8-Chloro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one including the price, delivery time and more detailed product information at the technical inquiry form on this page</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.

<p>Atorvastatin impurity F is an impurity that can be found in atorvastatin. It is a white to off-white crystalline solid with a melting point of 142°C. It has a molecular weight of 273.5 and chemical formula of C14H13N3O2. This impurity can be found in atorvastatin as an API impurity, which may have an effect on the efficacy or toxicity of the drug product. Impurities are present in all pharmaceutical products and should be identified, characterized, and quantified for quality control purposes. Impurities are often unavoidable byproducts of the manufacturing process and can lead to potential safety concerns if they are not detected early on during drug development. The presence of impurities may also affect the pharmacological effects or therapeutic efficacy of the drug product.</p>

<p>Ambroxol hydrochloride impurity B is a byproduct of the chemical synthesis of Ambroxol hydrochloride. It is an organic compound that is a colorless, crystalline solid with a melting point of 93°C and a vapor pressure of 0.0012 mmHg at 25°C. The biological relevance and chronic bronchitis detection time of Ambroxol hydrochloride impurity B are unknown. Chemical reactions involving this compound include hydrolysis, oxidation, esterification, and reduction. Ambroxol hydrochloride impurity B has been detected in human blood plasma as well as in the lungs, liver, spleen, brain and kidney tissues following intravenous administration. This substance can be found as a metabolite in urine and feces following oral ingestion or injection.</p>

<p>Naltrexone impurity A is a synthetic, high-purity drug product that is used as an analytical reference standard in the development and manufacture of pharmaceuticals. It is also used as a pharmacopoeia reference standard and to study metabolism. Naltrexone impurity A has been shown to be a major metabolite of naltrexone and can be found in the urine at concentrations of 1-2% following oral administration. This impurity is not active when given orally, but may have activity if injected intravenously or intramuscularly.</p>

<p>5-Methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfonyl]-1H-benzimidazole is an inhibitor of cytochrome P450 2C19. It has been shown to inhibit the activity of this enzyme in a concentration dependent manner and to enhance the activity of omeprazole by inhibiting its metabolism. 5-Methoxy-2-[(4-methoxy, 3,5 dimethylpyridiniumyl)methyl]sulfonyl]-1H benzimidazole is used as a model system for studying drug interactions due to its ability to inhibit cytochrome P450 2C19 and CYP2C19 protein expression. 5 METHOXY - 2 - [[ ( 4 - METHOXY - 3 , 5 - DIMETHYL - 2 - PYRIDINYL ) M</p>

<p>3-O-Methyl L-DOPA monohydrate is a chromatographic method that is used to diagnose Parkinson's disease. The method separates the catechol-o-methyltransferase (COMT) from plasma samples, which converts dopamine to 3-O-methyl dopamine. The 3-O-methyl dopamine reacts with an electrochemical detector and overlapped peaks can be seen on the chromatogram. This analytical method can be used to detect low levels of dopamine in the blood and diagnose Parkinson's disease.</p>

Sildenafil is a selective PDE-5 inhibitor that is used in the treatment of erectile dysfunction. It has been shown to have anticancer activity in vitro and in vivo. Sildenafil inhibits the activity of cyclic guanosine monophosphate (cGMP) phosphodiesterase type 5 (PDE-5), which is found in the corpus cavernosum of the penis and inhibits cGMP degradation, leading to vasodilation and increased blood flow. Sildenafil has been shown to inhibit cancer cell proliferation by blocking the synthesis of both DNA and protein, as well as inhibiting the expression of genes encoding for anti-apoptotic proteins. Sildenafil binds to PDE-5 with high affinity, but does not bind to other PDEs or ion channels at therapeutic concentrations.

<p>2-Phenylbutyric acid is a product of the oxidation of phenylacetic acid by flavus. 2-Phenylbutyric acid is an inhibitor of contactor reactions that use α1-acid glycoprotein as a chromatographic support. It has been shown to inhibit the reaction mechanism of extractants (e.g., butamirate citrate) with enantiomeric compounds (e.g., creatine). It also inhibits subclinical mastitis in cows and fatty acid synthesis, leading to decreased cholesterol synthesis in humans.</p>

<p>Remdesivir impurity 10 is a synthetic chemical compound that has been synthesized for research and development. It is an impurity standard of remdesivir, which is not present in any drug product. The purity of this product is high, and it can be used as a pharmacopoeia or drug development standard. It can also be used as an analytical standard to measure the concentration of metabolites in animal studies or metabolism studies.</p>

<p>Methyl 2-deoxy-3,5-di-O-(4-chlorobenzoyl)-a-D-ribofuranoside is a research and development impurity standard for the synthesis of drug products. This chemical is used as a metabolite in the study of metabolic pathways and can be converted to Methyl 3,5-di-O-(4-chlorobenzoyl)-a-D-ribofuranoside by hydrolysis with dilute acid. Methyl 2-deoxy-3,5-di-O-(4-chlorobenzoyl)-a-D ribofuranoside has been shown to be a synthetic molecule and is listed in pharmacopoeia. CAS No. 7818564 5.</p>

<p>4-(2-((Cyclohexylcarbamoyl)amino)ethyl)benzenesulfonamide is a research and development impurity standard that is used for the synthesis of drug products. CAS No. 10080-05-4, 4-(2-((Cyclohexylcarbamoyl)amino)ethyl)benzenesulfonamide is a synthetic compound that has been shown to be metabolized in humans and in rats. It has been extensively evaluated as a potential antituberculosis drug candidate and shown to inhibit bacterial growth by binding to DNA-dependent RNA polymerase, thereby preventing transcription and replication. This active form is metabolized through a number of metabolic transformations, including hydrolysis by esterases or glucuronidases, oxidation by cytochrome P450 enzymes, reduction by glutathione reductase, or conjugation with glucuronic acid. In vitro studies have demonstrated its efficacy against Mycobacter</p>

<p>Beta-Asp-(9)-Semaglutide is a semaglutide impurity. The amino acid at position 9 has been replaced by the beta-aspartic acid (also known as isoaspartic, isoAsp, β-Asp or beta-Asp). 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>Acyclovir is an antiviral drug that inhibits the replication of herpes viruses by selectively inhibiting viral DNA polymerase. The drug is active against a broad range of herpes viruses, including both types of herpes simplex virus (HSV-1 and HSV-2) and varicella zoster virus. Acyclovir has also been shown to be effective against aciclovir-resistant mutants. This drug can be used as a prophylaxis or in combination with other antiviral agents for the treatment of active infections. Acyclovir can cause headaches, nausea, vomiting, and diarrhea when taken orally. It should not be taken with certain medicines such as aminoglycosides or high doses of aspirin because this may increase the risk for kidney problems.</p>

<p>Trazodone hydrochloride impurity H is an impurity of the drug product Trazodone hydrochloride. It is a natural metabolite of Trazodone hydrochloride, which is synthesized in vivo by oxidation of the parent compound. Impurity H has been identified as a potential impurity standard for HPLC-UV analysis of Trazodone hydrochloride. The purity of this compound is 98.3% and it is available on a custom synthesis basis.</p>

<p>D-Ser(11)-Semaglutide is a semaglutide impurity. The amino acid at position 11 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>

<p>11-Piperazin-1-yl-dibenzo[b,f][1,4]thiazepine is a drug used to treat schizophrenia and bipolar disorder. It is a member of the thiazepine class of antipsychotics that blocks dopamine receptors in the brain. 11-Piperazin-1-yl-dibenzo[b,f][1,4]thiazepine has been shown to be effective for treatment trials and toxicity studies in animals. This drug has also been shown to have an anti-inflammatory effect on cytokines such as il-10. The drug interacts with other drugs by inhibiting the activity of certain enzymes that metabolize it so it can be eliminated from the body more quickly. The elimination half life for this drug is about 6 hours. 11-Piperazin-1-yl-dibenzo[b,f][1,4]thiazepine binds to specific receptors in the brain which</p>

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>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>α-Methyl-1,3-benzodioxole-5-propanamine (AMEB) is a chemical compound that minimizes the reaction products in industrial reactions. It has been used as an absorption agent and crosslinking agent in bioconjugate chemistry. The hydroxyl group on AMEB can be removed by hydrolysis to yield α-methyl-1,3-benzodioxole, which can then be converted to the amino acid methionine. AMEB has also been shown to have locomotor activity and to increase the synthesis of hyaluronic acid, which is important for maintaining joint health.</p>

<p>Tirzepatide impurity.</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>Paclitaxel breakdown product</p>

<p>5,6-Dichloro-1,4-dihydro-2-quinazolinamine (5,6-DCQ) is a small molecule that has been used in vitro to study postnatal development. 5,6-DCQ binds to magnesium and forms a cation complex. This binding inhibits the activity of various enzymes such as phosphodiesterase and acetylcholinesterase. 5,6-DCQ also blocks the proliferation of cancer cells in vitro by inhibiting colony-stimulating factor and other proteins required for cell division. 5,6-DCQ has been shown to be safe in clinical trials and may be an effective treatment for cancer.</p>

<p>Gliclazide is a sulfonylurea drug that is used to treat type 2 diabetes. The impurity F, which is an impurity standard, can be synthesized by reacting 1-chloro-2,6-difluoroaniline with sodium methoxide in methanol. It is also an API impurity found in the synthesis of gliclazide and can be custom synthesized for research and development purposes. Gliclazide impurity F has a CAS number of 1076198-18-9 and the molecular formula C8H4ClF3NOS. This product has a purity of &gt;99% and is classified as synthetic. It has been shown to have pharmacopoeia activity and can also be used for niche applications such as drug development.</p>

<p>10,11-Dihydroxy-d10 Carbamazepine is a drug product that is used as an analytical reference standard. It is natural and synthetic impurity in the API (active pharmaceutical ingredient) Carbamazepine. The CAS number for 10,11-Dihydroxy-d10 Carbamazepine is 513-81-5. This compound has been synthesized by custom synthesis and is an impurity standard for HPLC analysis of carbamazepine. 10,11-Dihydroxy-d10 Carbamazepine is also a research and development chemical for the drug development industry. It has been classified as a niche chemical due to its high purity and pharmacopoeia grade.</p>

Olsalazine sodium impurity G is an API impurity. It is an important impurity in the production of Olsalazine Sodium, which is a drug for the treatment of inflammatory bowel disease and ulcerative colitis. This compound has been shown to have a high purity level and a pharmacopoeia grade. The CAS number for this compound is 1209-03-9. This compound can be synthesized using organic chemistry methods, or it can be extracted from natural resources such as plants or animal tissues.

<p>Erythromycin impurity N is a natural metabolite of erythromycin. It is a metabolite of erythromycin that has been identified in the metabolism studies of this drug product. Erythromycin impurity N is an analytical standard for use in pharmaceutical research and development, as well as in the pharmacopoeia. The CAS number for this compound is 527-56-8.</p>

The impurity (2,6-dichlorobenzaldehyde) is a metabolite of montelukast. It is an analytical impurity that has been quantified in the drug product and has also been found to be present in the synthetic process. The impurity standard was developed using HPLC. It can be used as a high purity reference material for pharmacopoeia and custom synthesis.

<p>Cetirizine Impurity B is a custom synthesis impurity. It is a product of the metabolism of cetirizine, an anti-allergic drug. Cetirizine Impurity B is used as an impurity standard for drug development and analytical HPLC studies. It has been assigned CAS number 113740-61-7 by the Chemical Abstracts Service. The purity of this compound is greater than 99%.</p>

<p>Erythromycin impurity M is a natural, API impurity (impurity standard) that is a metabolite of erythromycin. It has been synthesized as a high purity HPLC standard to meet the requirements of pharmacopoeia and drug development. Erythromycin impurity M is an analytical reference material with CAS number 528-73-2.</p>

<p>Darunavir Urea Impurity is an impurity of Darunavir which is used in the treatment of HIV. It is produced as a result of the metabolism of Darunavir by Cytochrome P450 enzymes. This impurity has been shown to be present in drug products that contain Darunavir and are manufactured using a process involving the use of urea. The CAS number for this impurity is 557-87-2.</p>

<p>Terbinafine is an antifungal agent that belongs to the family of medicines. It is used to treat fungal infections of the skin, nails and scalp. Terbinafine can also be used to treat other types of fungal infections, such as tinea corporis (ringworm), tinea cruris (jock itch), tinea pedis (athlete's foot) and tinea capitis (scalp ringworm). Terbinafine dimer impurity dihydrochloride is a by-product of terbinafine hydrochloride that has been shown to have industrial applications as a dispersant or lubricant in industries such as papermaking.</p>

Acetylenedicarboxylic acid methyl ester (ADME) is a potent inhibitor of kinases that play a crucial role in cancer cell growth and apoptosis. It has been shown to exhibit anticancer activity against various tumor cell lines, including Chinese hamster ovary cells and human bladder carcinoma cells. ADME has also been found in urine samples from healthy individuals, indicating its presence in the human body. This compound specifically targets D-xylose kinases, which are overexpressed in certain cancer cells, leading to their growth inhibition and apoptosis induction. As an inhibitor of these kinases, ADME has potential as a therapeutic agent for the treatment of cancer.

<p>Tirzepatide impurity.</p>

<p>Ciprofloxacin impurity A is an analog of ciprofloxacin and is a pharmaceutical preparation that belongs to the class of fluoroquinolones. It has been shown to be active against P. aeruginosa and other gram-negative bacteria in wastewater treatment systems. Ciprofloxacin impurity A is activated by ethylene diamine and can be eluted with acidic solvents. It also inhibits tumor cell line growth through adsorption mechanism and is used as a drug for cancer chemoprevention in combination with malic acid.</p>

<p>(RS)-Isopropyl 2-methoxyethyl 1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)pyridine-3,5-dicarboxylate is a drug product with an analytical purpose. This compound is metabolized by the liver and excreted in the urine. It has been shown that this compound is not present in natural sources. The CAS number for this compound is 1316606-40-2 and it's API impurity is less than 0.0001%. This drug product has been synthesized from a custom synthesis and it is an impurity standard for HPLC analyses. It has also been used as a research and development tool to develop drugs or study metabolism studies. This compound is pure enough to be used as a pharmacopoeia standard</p>

<p>Bisoprolol impurity K is a drug product that is an analytical standard used for the detection and identification of bisoprolol in pharmaceutical products. It is a synthetic impurity with CAS No. 864544-37-6 that does not have any pharmacological activity. Bisoprolol impurity K is a high purity HPLC standard that can be used to develop analytical methods for the determination of bisoprolol in pharmaceutical products.</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>

Aceclofenac methyl ester is an analgesic that belongs to the arylpropionic acid derivatives. It has been developed for the treatment of acute pain. Aceclofenac methyl ester has a structural formula of CH3CO-O-CH3 and a molecular weight of 164.2 g/mol. Aceclofenac is metabolized by CYP450 enzymes, which are located in the liver and other organs, to form acetic acid and 5-hydroxyaceclofenac. The reaction time is approximately 1 hour and tetrahydrofuranyl (THF) is used as a nucleophile in this reaction. This product can be synthesized by reacting ethyl acetate with acetonitrile in high yield, making it stable and anhydrous. The analgesic effects of aceclofenac methyl ester are due to its ability to block the transmission of pain signals from nerves to the brain at the spinal cord level

<p>3-(Dimethylamino)-1-(3-thienyl)propan-1-ol (DMAT) is an impurity that was identified in a drug product and that is not found in the natural form. DMAT is an intermediate of the synthesis of DMH, which is used as a research and development tool. DMAT has been shown to be metabolized by cytochrome P450 enzymes and other oxidative reactions, such as oxidation by cytochrome P450 enzymes or conjugation with glucuronic acid. DMAT also binds to markers expressed at high levels in Mycobacterium tuberculosis strains (e.g., ESX-1 secretion system protein) and inhibits cell growth in culture.</p>

<p>N-Desmethyl galanthamine is a plant alkaloid that is found in the Huperzia serrata plant. It has been shown to have cholinergic activity and calcium binding properties. N-Desmethyl galanthamine inhibits acetylcholinesterase, an enzyme responsible for the breakdown of acetylcholine, which is a neurotransmitter. This inhibition leads to increased levels of acetylcholine, which results in increased neuron stimulation and improved memory function. N-Desmethyl galanthamine also binds to β2 nicotinic receptor sites and blocks the binding of nicotine, leading to decreased nicotine dependence.</p>

Lisdexamfetamine dimesylate impurity B is a high purity, synthetic, custom synthesis drug product. Lisdexamfetamine dimesylate impurity B is a metabolite of lisdexamfetamine and the impurity standard for lisdexamfetamine dimesylate. It is used in pharmacopoeia to develop drugs. Lisdexamfetamine dimesylate impurity B is also used in analytical studies such as HPLC standards.

<p>N,N'-Bis(4-chlorobenzylidene)hydrazine is an organic nitrogen compound that is used as a reagent in organic chemistry. It can be used to synthesize hydrazones, toluenes, and carbonyls. This reagent also has the ability to catalyze olefinations. N,N'-Bis(4-chlorobenzylidene)hydrazine can be crystallized from its aryldiazomethanes.</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>