β-Glucuronidase-IN-3

β-Glucuronidase-IN-3 (Compound 49) is a covalent allosteric β-glucuronidase inhibitor. β-Glucuronidase-IN-3 has potent inhibitory activity against Escherichia coli β-glucuronidase (EcGUS) (IC50: 12.9 nM). β-Glucuronidase-IN-3 exerts its inhibitory effect by reversibly covalently modifying the cysteine residues (Cys28, Cys443, and Cys197) of EcGUS. β-Glucuronidase-IN-3 can be used in the study of intestinal microbiota-related diseases, especially to alleviate the toxic side effects of Irinotecan and nonsteroidal anti-inflammatory drugs (NSAIDs).