Synonyms: 2,7-Naphthalenedisulfonic acid, 3-amino-4-4-4-2-2-(ethenylsulfonyl)ethoxyethylamino-6-fluoro-1,3,5-triazin-2-ylamino-2-sulfophenylazo-5-hydroxy-, trisodium salt;3-Amino-4-[[4-[[4-[[2-[2-(ethylsulfonyl)ethoxy]ethyl]amino]-6-fluoro-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]azo]-5-hydroxy-2,7-naphthalenesulfonic acid, sodium salt