5-Bromo-4-chloro-3-indoxyl nonanoate

5-Bromo-4-chloro-1H-indol-3-yl nonanoate is a fluorescent substrate used to detect enzymes. The substrate reacts with various enzymes to produce a fluorescent product, which has been shown to be active against β-galactosidase, α-chymotrypsin, and β-glucuronidase.