Sulfonamides and Derivatives

Impurity Sulfadimethoxine EP Impurity C
Stability Hygroscopic
Applications 4-Acetamidobenzenesulfonic Acid (Sulfadimethoxine EP Impurity C) is a metabolite of Sulfanilic acid.
References Saab, N., et al.: Eur. J. Med. Chem., 34, 745 (1999), Kim, H., et al.: J. Pharm. Biomed. Anal., 27, 51 (2002), Santelli-Rouvier, C., et al.: Eur. J. Med. Chem., 39, 735 (2004),

Impurity Piroxicam EP Impurity G
Applications Piroxicam impurity G.
References Lombardino, J., et al.: J. Med. Chem., 14, 1171 (1971), Turck, D., et al.: Clin. Pharmacol., 36, 79 (1996), Bihovsky, R., et al.: Bioorg. Med. Chem. Lett., 14, 1035 (2004),

Impurity USP Trimethoprim Related Compound A
Applications 6-Amino-5-[(3,4,5-trimethoxyphenyl)methyl]-2(1H)-pyrimidinone, is an impurity of Trimethoprim (T795615), an antibacterial agent.
References Popov, V. M., et al.: Bioorg. Med. Chem. Lett., 16, 4366 (2006); Brogden, R.N., et al.: Drugs, 23, 405 (1982);

Applications A sulfonylurea hypoglycemic agent. Used as an antidiabetic.
References Ratheiser, K., et al.: Arzneimittel-Forsch., 43, 856, (1993),

Impurity Indapamide USP Related Compound A/ Indapamide EP Impurity B
Applications A metabolite of Indapamide (M5). A dehydrogenation pathway by cytochromes P450. Indapamide USP Related Compound A
References Tamura A., et al.: Chem. Pharm. Bull., 38, 225 (1990), Harlow, G.R., et al.: J. Biol. Chem., 272, 5396 (1997), Ozden, T., et al.: Pharm. Pharmacol. Commun., 4, 397 (1998), Gruciani, G., et al.: J. Med. Chem., 48, 6970 (2005), Sun, H., et al.: Drug. Metab. Dispos., 37, 672 (2009),

Impurity Bumetanide Impurity A
Applications 3-Nitro-4-phenoxy-5-sulfamoylbenzoic Acid is a compound related to Piretanide (P508700) and an intermediate in the production of Bumetanide, Bumetanide Impurity A (B689550).

Impurity Ibuprofen EP Impurity G
Applications Ibuprofen Dimer (Ibuprofen EP Impurity G) is a dimer impurity of Ibuprofen (I140000).

Applications Labelled Ibuprofen, a selective cyclooxygenase inhibitor (IC50=14.9uM). Inhibits PGH synthase-1 and PGH synthase-2 with comparable potency.
References Busson, M., et al.: J. Int. Med Res., 14, 53 (1986), Meade, E.A., et al.: J. Biol. Chem., 268, 6610 (1993), Davies, N.M., et al.: Clin. Pharmacokinet., 34, 101 (1998),

Applications Bis(4-hydroxyphenyl) Sulfone is commonly used as a reactant in epoxy reactions and is also used as a latent thermal catalyst for epoxy resin.
References Fu, J.W., et al.: Adv. Mat. Rsch., 266, 1022 (2011); Li, J.X., et al.: Polymers. Adv. Tech., 23, 803 (2012);

Impurity Glimepiride EP Impurity B/ USP Glimepiride Related Compound B
Applications 4-[2-[(3-Ethyl-4-methyl-2-oxo-3-pyrrolin-1-yl)carboxamido]ethyl]benzenesulfonamide (Glimepiride EP Impurity B) is an intermediate for the preparation of Glimepiride.

Applications N,N-Dimethylnicotinamide-2-sulfonamide (cas# 112006-75-4) is a compound useful in organic synthesis.

Applications 2-Amino-5-chlorobenzenesulfonamide is a metabolite of IDRA-21 (I232500), which inhibits AMPA receptor desensitization and enhances cognition by a related mechanism. IDRA-21 is more able to cross the blood-brain barrier than Cyclothiazide (C988960).
References Cannazza, G., et. al.: Bioorg. Med. Chem. Lett., 19, 1254 (2009); Zivkovic, et al.: J. Pharmacol. Exp. Ther., 272, 300 (1995); Dingledine, R., et al.: Pharmacol. Rev., 51, 7 (1999); Sun, Y., et al.: Nature, 417, 245 (2002); Thomsen, R., et al.: J. Med. Chem., 49, 3315 (2006)

Applications Indomethacin Diamide is an impurity of Indomethacin (I641000), an non-steroidal anti-inflammatory drug commonly used in the treatment of fever, pain and swelling.
References Salari, H., et al.: Prostagland. Leukotrienes Med., 13, 53 (1984), Lehmann, J.M., et al.: J. Biol. Chem., 272, 3406 (1997)

Applications Labelled Hydrochlorothiazide (H714560). Hydrochlorothiazide is a carbonic anhydrase inhibitor as a diuretic.
References Piala, J.J., et al.: J. Pharmacol. Exp. Ther., 134, 273 (1961), Deppeler, H.P., et al.: Anal. Profiles Drug Subs., 10, 405 (1981),

Applications A non-peptide proteaseinhibitor.
References Ayoyama, T., et al.: Chem. Pharm. Bull., 33, 1458 (1985)

Applications The isotopically labelled drug Sulfadiazine. Antibacterial.
References Bohni, et al.: Chemotherapy, 14, 195 (1969), Carr, et al.: Antimicrob. Agents Chemother., 4, 585 (1973), Stober, H., et al.: Anal. Profiles Drug Subs., 11, 523 (1982),