Synthesis and Characterization of Metabolites and Potential Impurities of Balsalazide Disodium, an Anti-Inflammatory Drug
作者:Md. Umar Khan、M. A. Baseer、S. Ranjith Kumar、M. Saravanakumar、A. G. Prasannanjali、P. Badarinadh Gupta、Vipin K. Kaushik、Vijay K. Handa、Aminul Islam
DOI:10.1080/00397910903221068
日期:2010.7.12
Balsalazide disodium (Colazide (R)) is an oral prodrug of mesalamine (5-aminosalicylic acid) and possesses anti-inflammatory properties. During the process development for balsalazide disodium, we observed eight impurities, namely des--alanine balsalazide, balsalazide -alanine, balsalazide 3-isomer, decarboxy balsalazide, bis-azo salicylic acid, biphenyl-azo salicylic acid, bis-azo diacid, and bis-azo triacid. The present work describes the synthesis and characterization of these impurities.