75522-93-9 Benzoic acid, 2-((2-amino-6-((4'-((5-((2,5-disulfophenyl)azo)-1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl)azo)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)azo)-5-hydroxy-7-sulfo-1-naphthalenyl)azo)-5-nitro-, tetrasodium salt EINECS 278-235-5