N,N-(1,4-phenylene)bis(4-chlorobenzenesulfonamide)

hiCE inhibitor-1, a sulfonamide derivative, is a selective human intestinal enzyme (hiCE) inhibitor with a Ki value of 53.3 nM. hiCE inhibitor-1 can be used to improve Irinotecan (HY-16562)-induced diarrhoea[1].

[1] Randy M Wadkins, et al. Discovery of novel selective inhibitors of human intestinal carboxylesterase for the amelioration of irinotecan-induced diarrhea: synthesis, quantitative structure-activity relationship analysis, and biological activity. Mol Pharmacol. 2004 Jun;65(6):1336-43. DOI:10.1124/mol.65.6.1336