Synonyms: sodium 5-[(3-nitrophenyl)azo]-8-(phenylamino)naphthalenesulphonate;Acid Red C;1-Naphthalenesulfonic acid, 5-[(3-nitrophenyl)azo]-8-(phenylamino)-, monosodium salt;5-[(3-Nitrophenyl)azo]-8-(phenylamino)-1-naphthalenesulfonic acid sodium salt;1-Naphthalenesulfonic acid, 5-(2-(3-nitrophenyl)diazenyl)-8-(phenylamino)-, sodium salt (1:1);1-Naphthalenesulfonic acid, 8-(phenylamino)-5-((3-nitrophenyl)azo)-, sodium salt;5-((m-Nitrophenyl)azo)-8-phenylamino-1-naphthalenesulfonic acid, sodium salt;Einecs 269-352-2