6-amino-5-[[4-[(2-bromo-1-oxoallyl)amino]-2-[(4-methyl-3-sulphophenyl)sulphonyl]phenyl]azo]naphthalene-2-sulphonic acid

6-Amino-5-[[4-[(2-bromo-1-oxo-2-propenyl)amino]-2-[(4-methyl-3-sulfophenyl)sulfonyl]phenyl]azo]-2-naphthalenesulfonic acid