Toxicology

Applications (±)-Carvedilol-d4 (ethyl-d4) (CAS# 1133705-56-2) is a useful isotopically labeled research compound.

Applications Testosterone Heptanoate-6,6,7,7,7-d5 (CAS# 1263095-31-3) is a useful isotopically labeled research compound.

Applications Testosterone-16,16,17-d3 Hexanoate is a useful isotopically labeled compound of Testosterone Hexanoate (T155125)

Applications Testosterone-2,2,4,6,6-d5 Acetate is a useful isotopically labeled compound of Testosterone 17-O-Acetate (T155025)

Applications 8-Chloro-6-(2-fluorophenyl)-3a,4,5,6-tetrahydro-1-methyl-3H-imidazo[1,5-a][1,4]benzodiazepine-d3 is an isotope labelled impurity of Midazolam (M343000), a drug used for the treatment of acute seizures and is also known to exhibit activities as an anticonvulsant, sedative, and hypnotic.
References Dundee, J. W., et al.: Drugs, 28, 519 (1984); Lahat, E., et al.: Br. Med. J., 321, 83 (2000);

Applications Chloramphenicol-3-O-sulfate Sodium Salt is a salt version of Chloramphenicol-3-O-sulfate (CAS 116512-90-4) which can be used in study for evidence for new metabolic pathways of Chloramphenicol in the duck. Metabolite of the drug Chloramphenicol (C325030).
References Cravedi, J. P., et al.: Drug Metab Dispos, 22, 578 (1994)

Applications (cas# 53188-20-8) is a useful research chemical.

Applications N-Acetyl-cys(1)-calcitonin Salmon is a derivative of Calcitonin (salmon), is a 32-amino acid linear polypeptide hormone that is produced in thyroid in humans. It acts to reduce blood calcium (Ca2+), opposing the effects of parathyroid hormone (PTH).
References Boron, WF., et al.: Med. Physi., A Cellular and Molecular Approach (2004); Andreotti, G. et al.: J. Bio. Chem., 281, 24193 (2006);

Applications (Z)-Benzyl (2-Amino-2-(hydroxyimino)ethyl)carbamate is an intermediate used in the synthesis of N-((5-Hydroxy-6-oxo-4-((2,4,6-trifluorobenzyl)carbamoyl)-1,6-dihydropyrimidin-2-yl)methyl)-1,3,4-oxadiazole-2-carboxamide (H950690), which is a derivative of Raltegravir (R100305), a potent integrase (IN) inhibitor for WT and S217Q PFV IN.
References Hare, S., et al.: Proc. Natl. Acad. Sci. U. S. A., 107, 20057 (2010); Hicks, C., et al.: Clin. Infect. Dis., 48, 931 (2009); Moss, D., et al.: Antimicrob. Agents Chemother., 56, 3020 (2012); Hare, S., et al.: Mol. Pharmacol., 80, 565 (2011)

Applications (3aR,4R,6aS)-4-Methoxytetrahydrofuro[3,4-b]furan-2(3H)-one is an isomer of an impurity of Darunavir (D193500), a second generation HIV-1-protease inhibitor; structurally similar to amprenavir. Antiviral.
References Koh, Y., et al.: Antimicrob. Agents Chemother., 47, 3123 (2003), Arasteh, K., et al.: AIDS, 19, 943 (2005); Surleraux, D.L.N.G., et al.: J. Med. Chem., 48, 1813 (2005)

Stability Hygroscopic
Applications Atorvastatin impurity in bulk drug and tablets.
References Posvar, E., et al.: J. Clin. Pharmacol., 36, 728 (1996), Lea, A., et al.: Drugs, 53, 828 (1997), Miao, X., et al.: J. Chromatogr., 998, 133 (2003),

Applications 4-Methyl-1,2,3-Thiadiazole-5-Carboxylic Acid (cas# 18212-21-0) is a useful research chemical.

Applications Darunavir N-β-D-Glucuronide Sodium Salt (90%) is a salt analogue of Darunavir N-β-D-Glucuronide (D193510), which is a metabolite of Darunavir (D193500) an inhibitor of human immunodeficiency virus (HIV) protease. It is a COVID19-related research product.
References Vermeir, M. et al.: Drug Metab. Disp., 37, 809 (2009); Koh, Y., et al.: Antimicrob. Agents Chemother., 47, 3123 (2003); Arasteh, K., et al.: AIDS, 19, 943 (2005);

Impurity Itraconazole EP Impurity E
Applications trans-Itraconazole (Itraconazole EP Impurity E) is a geometrical isomer of Itraconazole (I937500). It is a COVID19-related research product.
References Ahn, C., et al.: J. Korean Chem. Soc., 43, 676 (1999),

Impurity Nevirapine EP Impurity D
Applications Nevirapine Dimer (Nevirapine EP Impurity D) is a dimeric impurity of the antiviral Nevirapine (N391275).

Applications A metabolite of Triazolam (T767380).
References Gygi, S., et al.: Drug Metab. Dispos., 24, 282 (1996), Slawson, M., et al.: J. Anal. Toxicol., 20, 350 (1996), Mei, Z., et al.: Ther. Drug Monit., 19, 92 (1997), Nakahara, Y., et al.: Life Sci., 63, 88392 (1998),

Impurity Fluconazole EP Impurity A
Applications Iso Fluconazole (Fluconazole EP Impurity A) is an impurity of Fluconazole (F421000). Fluconazole USP impurity A.
References Rogers, T., et al.: Antimicrob. Agents Chemother., 30, 418 (1986), Itoh, H., et al.: Chem. Pharmaceut. Bull., 48, 1148 (2000),

Applications (2E)-3-(2-Thiazolyl)-2-propenoic Acid is a useful synthetic intermediate. It is used as an intermediate for HIV-1 protease inhibitor.
References Baloglu, E., et al.: PCT Int. Appl. (2014), WO 2014085607 A1 20140605

Applications 1,3-Difluoro-2-methylpropan-2-ol is a reagent used in the synthesis of hepatitis C virus inhibitors.