Cholicacidanilide is a synthetic bile acid and derivative of cholicacid that inhibits the germination of C. difficile strain R20291 spores in vitro (IC50 = 1.8 μM).1 |1. Sharma, S.K., Yip, C., Esposito, E.X., et al. The design, synthesis, and characterizations of spore germination inhibitors effective against an epidemic strain of Clostridium difficile. J. Med. Chem. 61(15), 6759-6778 (2018).