calcomine orange 2rs

Benzoic acid, 4-(2-(1-hydroxy-6-((((5-hydroxy-6-(2-phenyldiazenyl)-7-sulfo-2-naphthalenyl)amino)carbonyl)amino)-3-sulfo-2-naphthalenyl)diazenyl)-, sodium salt (1:3), Benzoic acid, 4-((1-hydroxy-6-((((5-hydroxy-6-(phenylazo)-7-sulfo-2-naphthalenyl)amino)carbonyl)amino)-3-sulfo-2-naphthalenyl)azo)-, trisodium salt, Trisodium 4-((1-hydroxy-6-((((5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl)amino)carbonyl)amino)-3-sulphonato-2-naphthyl)azo)benzoate, trisodium 4-{(2Z)-2-[3-oxo-6-({[(6E)-5-oxo-6-(2-phenylhydrazinylidene)-7-sulfonato-5,6-dihydronaphthalen-2-yl]carbamoyl}amino)-1-sulfonatonaphthalen-2(3H)-ylidene]hydrazinyl}benzoate