18987-99-0 Dihydrogen (4-hydroxy-3-((3-methyl-5-oxo-1-phenyl-2-pyrazolin-4-yl)azo)benzene-1-sulphonato(3-))(1-((2-hydroxy-5-(phenylazo)phenyl)azo)-2-naphtholato(2-))chromate(2-) EINECS 242-722-0