Synonyms: C.I. Acid Red 337;2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-5-(2-(2-(trifluoromethyl)phenyl)diazenyl)-, sodium salt (1:1);2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-5-(2-(2-;5-((2-Trifluoromethylphenyl)azo)-6-amino-4-hydroxy-2-naphthalenesulfonic acid, sodium salt;6-Amino-4-hydroxy-5-((2-(trifluoromethyl)phenyl)azo)-2-naphthalenesulfonic acid, sodium salt;6-Amino-4-hydroxy-5-((alpha,alpha,alpha-trifluoro-o-tolyl)azo)-2-naphthalenesulfonic acid, monosodium salt;EINECS 267-090-3;2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-5-((2-(trifluoromethyl)phenyl)azo)-, monosodium salt;Sodium 6-amino-4-hydroxy-5-((2-(trifluoromethyl)phenyl)azo)naphthalene-2-sulphonate;sodium (6E)-6-imino-4-oxo-5-{2-[2-(trifluoromethyl)phenyl]hydrazino}-4,6-dihydronaphthalene-2-sulfonate;sodium 6-amino-4-hydroxy-5-[2-(trifluoromethyl)phenyl]azo-naphthalene-2-sulfonate