8-[5-(2-Bromoacryloylamino)-2-sodiosulfophenylazo]-1-(2-chloroanilino)-9-hydroxy-2-methyl-1H-naphth[1,2-d]imidazole-7-sulfonic acid sodium salt

disodium 8-[[5-[(2-bromo-1-oxoallyl)amino]-2-sulphonatophenyl]azo]-1-[(2-chlorophenyl)amino]-9-hydroxy-2-methyl-1H-naphth[1,2-d]imidazole-7-sulphonate

8-[5-(2-Bromoacryloylamino)-2-(sodiooxysulfonyl)phenylazo]-1-(o-chloroanilino)-9-hydroxy-2-methyl-1H-naphth[1,2-d]imidazole-7-sulfonic acid sodium salt