Synonyms: 2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-5-(2-(2-(trifluoromethyl)phenyl)diazenyl)-, compd. with 2,2'-iminobis(ethanol) (1:1);2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-5-((alpha,alpha,alpha-trifluoro-o-tolyl)azo)-, diethanolamine salt;2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-5-((2-(trifluoromethyl)phenyl)azo)-, compd. with 2,2'-iminobis(ethanol) (1:1);6-Amino-4-hydroxy-5-((2-(trifluoromethyl)phenyl)azo)naphthalene-2-sulphonic acid, compound with 2,2'-iminodiethanol (1:1);(6E)-6-imino-4-oxo-5-{2-[2-(trifluoromethyl)phenyl]hydrazino}-4,6-dihydronaphthalene-2-sulfonic acid - 2,2'-iminodiethanol (1:1)