Synonyms: trisodium 2-[[4-[[4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-7-sulphonato-1-naphthyl]azo]-2,5-dimethylphenyl]azo]benzene-1,4-disulphonate;1,4-Benzenedisulfonic acid, 2-4-4-(4-amino-6-chloro-1,3,5-triazin-2-yl)amino-7-sulfo-1-naphthalenylazo-2,5-dimethylphenylazo-, trisodium salt;2,5-Dimethyl-4-[4-(4-chloro-6-amino-1,3,5-triazin-2-ylamino)-7-sodiosulfo-1-naphtylazo]azobenzene-2',5'-disulfonic acid disodium salt;2-[4-[4-(4-Amino-6-chloro-1,3,5-triazin-2-ylamino)-7-sodiosulfo-1-naphtylazo]-2,5-dimethylphenylazo]-1,4-benzenedisulfonic acid disodium salt