94233-12-2 Disodium (4-amino-5-hydroxy-6-((2-hydroxy-5-nitrophenyl)azo)naphthalene-1,7-disulphonato(4-))(2-((2-hydroxy-5-sulphamoylphenyl)azo)-3-oxo-N-phenylbutyramidato)chromate(2-) EINECS 304-042-3