90295-00-4 Copper, 8-hydroxy-7-((3(or 3')-hydroxy-4'-((1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl)azo)-3'(or 3)-methoxy(1,1'-biphenyl)-4-yl)azo)-1,3,6-naphthalenetrisulfonate sodium complexes EINECS 290-990-2