APIs pour la recherche et les impuretés

Valganciclovir related compound G is a drug product. It has been synthesized in our lab. Valganciclovir related compound G is not an approved drug and is not currently available in the market. Valganciclovir related compound G is a high purity analytical standard that can be used for metabolism studies, natural product research, synthetic research, and pharmacopoeia. Valganciclovir related compound G is a metabolite of valganciclovir and can be used as an impurity standard for HPLC analysis.

(E)-4-Alloxycarboxyl tamoxifen is a synthetic metabolite of tamoxifen. It is an impurity in the drug product, and can be found in the urine and blood of patients who have taken tamoxifen. The stability of (E)-4-Alloxycarboxyl tamoxifen has been studied by incubating it with rat liver microsomes at 37°C for 30 minutes. Metabolism studies have been done on rats and mice to measure the effect of (E)-4-Alloxycarboxyl tamoxifen on their endogenous levels of estrogen. The pharmacopoeia lists (E)-4-Alloxycarboxyl tamoxifen as a standard for HPLC analysis.

Levofloxacin is a synthetic molecule with an asymmetric carbon atom in its heterocycle. It is synthesized by reacting chloroform with 2-fluoro-5-nitrobenzaldehyde, which reacts further with sodium hydroxide and hydrochloric acid to form the levofloxacin carboxylic acid. Impurities can be found in the reaction product due to chlorine atoms that are formed during the synthesis. The amount of impurities present in the final product can be determined using a titration method or through HPLC analysis. Levofloxacin has been shown to be effective against methicillin-resistant Staphylococcus aureus (MRSA) and Clostridium perfringens, although is not active against acid-fast bacteria such as Mycobacterium tuberculosis or Mycobacterium avium complex.

L-Valine 2-hydroxyethyl ester tosylate (L-V2HT) is a drug product that is synthesized by custom synthesis. It has high purity, analytical, and natural properties. L-V2HT 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. The active form of L-V2HT 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. L-V2HT also specifically binds to markers expressed at high levels in Mycobacterium tuberculosis strains (e.g., ESX-1 secretion system protein) and inhibits cell

N-Formyl leurosine is an inhibitor of fatty acid synthesis. It has been shown to inhibit the growth of solid tumours in mice and rats, but not in dogs. The mechanism by which N-formyl leurosine inhibits tumour growth is unknown. This compound is a formylating agent, which means that it can be used to form an aldehyde group from formaldehyde. This group has been implicated in the antitumour activity of N-formyl leurosine.

1,4-Bis[(tetrahydro-2-furanyl)carbonyl]-piperazine is a synthetic drug product. It is used as an analytical standard to help elucidate the metabolic pathway of drugs and their metabolites. This compound has been shown to be metabolized by various enzymes including CYP450, glutathione reductase, and esterases. It can also be synthesized from 1,4-dihydropyridine and 2-furancarboxaldehyde. The physical properties of 1,4-bis[(tetrahydro-2-furanyl)carbonyl]-piperazine are: white powder; mp 178°C; IR max 1710 cm−1 (CO); UV max 221 nm (EtOH). The impurities in this product are: 1-(2H)-Quinolinone (CAS No. 2467-94-1) which may have a maximum concentration

5-[[4-[2-(5-Ethyl-2-pyridinyl)ethoxy]phenyl]-methylene]-2,4-thiazolidinedione is a drug product that is used for the research and development of drugs. It has been shown to be metabolized in vivo through oxidative and reductive pathways. 5-[[4-[2-(5-Ethyl-2-pyridinyl)ethoxy]phenyl]-methylene]-2,4-thiazolidinedione has been found to have antimicrobial properties against Mycobacterium tuberculosis. This compound was also shown to inhibit the growth of bacteria by binding to DNA gyrase and topoisomerase IV enzymes, which maintain the integrity of bacterial DNA.

Rjr 2429 dihydrochloride is a tumor promoter that has been shown to induce tumor growth in tissues and in cell culture. It inhibits the proliferation of tumor cells by binding to retinol-binding protein, thereby preventing the uptake of vitamin A. Rjr 2429 dihydrochloride also induces the production of flavanones, which are known to be inhibitors of proliferative processes. This compound has been studied for its ability to prevent retinopathy and has been shown to inhibit light-induced photoreceptor degeneration in rats.

Way 629 hydrochloride is a chemical compound that belongs to the class of synthetic, pharmacopoeia and drug development. It is used as an impurity standard and a custom synthesis. Way 629 hydrochloride is also used in the study of metabolism. This compound has been shown to be metabolized by cytochrome P450 enzymes, glucuronidases, glutathione reductase, or conjugation with glucuronic acid.

Xanthoxin is a medicinal compound with potent anticancer properties. It has been shown to induce apoptosis, or programmed cell death, in cancer cells. Xanthoxin has been tested in various cancer cell lines, including Chinese and human cells, and has demonstrated strong inhibitory effects on the tumor cycle. This compound works by inhibiting kinases and other proteins involved in cancer cell growth and proliferation. Xanthoxin is also known to be an inhibitor of certain urinary proteins that are associated with cancer progression. Overall, Xanthoxin shows great potential as a natural product for the development of novel anticancer therapies.

Linagliptin impurity E is a metabolite of the drug Linagliptin. It is an analytical reference material that is used to calibrate HPLC and GC-MS methods for quality control and purity assessment of Linagliptin. This impurity standard is also used for metabolism studies.

6-Desmethyl-6-methylhydroxy etoricoxib N1-oxide is a high purity drug product. It is an analytical standard used in the study of metabolism and in the development of drugs. This compound has been custom synthesized for use as an impurity standard for HPLC analysis of etoricoxib. 6DMHETO was synthesized to be used as a drug development research and development tool for the pharmaceutical industry, specifically for niche markets such as herbal supplements and dietary supplements.

17-o-(Acetyl-d3)-6-methylprednisolone is a drug product that belongs to the group of corticosteroids. It is used for the treatment of inflammatory conditions and autoimmune diseases. This API is used as an impurity standard in analytical methods such as HPLC, and it can be synthesized from natural sources or synthetically. 17-o-(Acetyl-d3)-6-methylprednisolone can also be used in R&D for the development of drugs targeting niche markets, such as those with high purity requirements.

Rac-keto labetalol is an active substance that belongs to the group of pyrazole derivatives. It is a racemic mixture of two enantiomers, (+)-labetalol and (-)-labetalol. Rac-keto labetalol is an antihypertensive drug that has been shown to be effective in lowering blood pressure in animal experiments. Rac-keto labetalol inhibits the activity of beta-adrenergic receptors, resulting in decreased heart rate, cardiac output, and peripheral vascular resistance. Rac-keto labetalol binds to alpha 1-adrenergic receptors but has no affinity for alpha 2A or alpha 2B adrenergic receptors. The hydrochloric acid used in the preparation of rac-keto labetalol reacts with lactide to form acetic acid and hydrochloric acid ester. This reaction is catalyzed by triphosgene, which also serves as a solvent for the

N-Methyl metribuzin is a drug product that belongs to the class of organic compounds known as phenylureas. It is a natural substance, which can be found in plants such as dandelion and rhubarb. Metribuzin has been shown to have pharmacological effects on the human body, including antimetabolite activity, anticancer activity, and anti-inflammatory activities. Metribuzin is metabolized by cytochrome P450 enzymes to form metabolites that are excreted in urine or bile. The metabolites are also active substances and may contribute to the pharmacological effects of metribuzin. Metribuzin can be synthesized from 2-chloro-5-(trifluoromethyl)benzoyl chloride and 3-methylisoxazole.
Metribuzin is used as an analytical standard for HPLC analysis because it has a high purity level and analytical quality. It is also used in

Fluocortolone Impurity 4 is a drug product that is custom synthesized to meet the high purity requirement of analytical standards. This research and development grade standard is used in metabolism studies, as well as pharmacopoeia. Fluocortolone Impurity 4 is a natural metabolite of fluocortolone and has been shown to inhibit the growth of bacteria by disrupting protein synthesis. It can be found in the urine, feces, and plasma of humans. Fluocortolone Impurity 4 has been shown to have anti-inflammatory effects and may be an effective treatment for arthritis.

Ethyl 2-methoxy-5-sulfamoylbenzoate is a research and development impurity standard. It is a white to off-white crystalline solid that is soluble in water. The product has been synthesized for use as a drug product, synthetic, and in the synthesis of other compounds. It has also been used as a metabolite in metabolism studies and an analytical standard for HPLC.

4,7-Dihydro megestrol acetate is a drug product that has been custom synthesized for research and development purposes. It is an analytical standard with a purity of ≥99% and a CAS number of 14994-27-5. Metabolism studies have been conducted in both rats and mice to determine the metabolic pathway of 4,7-dihydro megestrol acetate. The metabolites found in this study were 4,7-dihydro megestrol and the acetate ester of 4,7-dihydro megestrol. Metabolite standards are used to identify substances produced by metabolism or chemical reactions in biological samples. These standards are used as reference points for measuring the concentration or quantity of other substances in biological samples. Pharmacopoeia standards are used to verify the quality of drugs, food additives, ingredients, and other substances. They also serve as reference points for identifying impurities in substances that may be harmful

Sitagliptin Hydrazine Diamide impurity is an analytical reference material that has been manufactured in accordance with the requirements of the United States Pharmacopeia (USP) and the European Pharmacopoeia (EP). The material is a white to off-white crystalline powder. It has a purity of 99.9% with a specific gravity of 1.06 g/cm3 and a melting point of 176-177°C. This material is an impurity standard for Sitagliptin Hydrazine Diamide, CAS No. 2072867-07-1, which is used as an anti-diabetic drug product in niche markets.

Naproxen Impurity C is an analytical impurity that is found in Naproxen. It is a white crystalline powder with a melting point of 210°C and an assay of 99%. It has been shown to be a metabolite of Naproxen, and may have therapeutic value for the treatment of pain, inflammation, or fever. The purity of this product has been verified by HPLC analysis.