Building Blocks

Impurity Ipratropium EP Impurity D
Stability Light Sensitive
Applications Atropic acid (Ipratropium EP Impurity D) is an impurity of Ipratropium bromide (I740500) and Atropine Sulfate (A794625).
References Lyon, R., et al.: J. Pharm. Sci., 95, 1549 (2006), Loch, M., et al.: Toxicology, 233, 229 (2007), John, H., et al.: Anal. Bioanal. Chem., 396, 751 (2010),

Applications 5-Chlorosalicylic Acid, is a building block used for the manufacture of various pharmaceutical and biologically active compounds. It is used foe the synthesis of N-aryl-salicylamide derivatives as antitumor agents.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Wang, J., et al.: Youji Huaxue, 33, 1026 (2013); Pauk, K., et al.: Bioorg. Med. Chem., 21, 6574 (2013);

Stability Light Sensitive
Applications Protected Caffeic Acid
References Kurata, A., et al.: J. Biotechnol., 148, 133 (2010), Buzzi, F., et al.: Eur. J. Med. Chem., 44, 4596 (2009), Xu, G., et al.: Arch. Pharm., Res., 32, 1215 (2009),

Applications 4-Chlorophenyl Phenyl Sulfone is an impurity of Dapson (D193250), an antibacterial used in the treatment of dermatitis herpetiformis.
References Dong, X.W., et al.: Bioorg. Med. Chem., 16, 8151 (2008); Schafer, E., et al.: Arch. Environ. Contamin. Toxicol., 12, 355 (1983);

Applications 3-Iodobenzoic Acid (cas# 618-51-9) is a compound useful in organic synthesis.

Applications 2-Mercapto-4-methyl-5-thiazoleacetic Acid is used as a reagent for determination of hydroxylamine using fused gold nanoparticles immobilized on sol-gel film modified gold electrode.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Kannan, P., John, A.: Anal. Chim. Acta, 663, 158 (2010);

Applications 2,3,5-Triiodobenzoic Acid is a polar auxin transport inhibitor that inhibits and promotes endoreduplication in hypocotyls and cotyledons.
References Tanaka, R., et al.: Plant Cell Rep., 35, 2539-2547 (2016)

Impurity Levothyroxine EP Impurity C; T3-Acetic Acid (USP)
Applications 3,3',5-Triiodo Thyroacetic Acid (T3-Acetic Acid (USP)) is a thyroid hormone analogue. A potent Thyroxine impurity. Levothyroxine EP Impurity C.
References Horst, C., et al.: Biochem. J., 261, 945 (1989), Kvetny, J., et al.: Horm. Metab. Res., 24, 322 (1992), Yamauchi, K., et al.: J. Biol. Chem., 274, 8460 (1999), Davis, P., et al.: J. Endocrinol. Invest., 25, 377 (2002),

Stability Hygroscopic
Applications 3-Deoxy-D-manno-2-octulosonic Acid Ammonium Salt is a ketosidic component in all lipopolysaccharides of Gram-negative bacteria and has been identified in several acidic exopolysaccharides (K-antigens). Synthetic analogues of KDO may be studied for their potential to disrupt the biosynthesis of bacterial cell-wall components, and lead to new antibacterial agents.
References Altschul, S., et al.: J. Mol. Biol., 215, 403 (1990), Baumann, H., et al.: Biochemistry, 31, 4081 (1992), Hashimoto, M., et al.: Eur. J. Biochem., 268, 3139 (2001), Kodar, K., et al.: Immunol. Invest., 38, 704 (2009),

Impurity Indomethacin EP Impurity B
Applications N-Deschlorobenzoyl Indomethacin (Indomethacin EP Impurity B) is a metabolite of Indomethacin.
References O'Brien, W., et al.: Clin. Pharmacol. Ther., 9, 94 (1968), Duggan, D., et al.: J. Pharmacol. Exp. Ther., 181, 563 (1972), Abourashed, E., et al.: Curr. Med. Chem., 6, 359 (1999), Chatterjee, P., et al.: J. Nat. Prod., 62, 761 (1999),

Applications α-Desethyl Butamirate is an impurity in the synthesis of Butamirate (B690025), an antitussive drug.
References Wang, T., et al.: J. Pharm. Biomed. Anal., 23, 867 (2000), Lasztity, A., et al.: Microchem. J., 73, 59 (2002), Wang, L., et al.: J. Pharm. Biomed. Anal., 33, 961 (2003), Lewen, N., et al.: J. Pharm. Biomed. Anal., 35, 739 (2004),

Applications 2,​4-​Diaminoanisole is a component and degredation product of azo dyes in fabrics and textiles. Azo dyes occasionally produce carcinogenic effects and environmental reproductive toxicology. Dyes and metabolites, Environmental TestingEnvironmental toxin on US EPA Toxic Release Inventory list (TRI) list.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Nguyen, A. et al.: J. Env. Sci. Health A., 51, 744 (2016);

Stability Light Sensitive
Applications 4,4’-Diaminostilbene-2,2’-disulfonic Acid, 95+% (cas# 81-11-8) is a compound useful in organic synthesis.

Stability Hygroscopic
Applications Diazolidinyl urea is an antimicrobial agent.