C.I.23655

Direct Orange 31

C.I. Direct Orange 31

5-[[4'-[[4,5-Dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]-3,3'-dimethyl-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid disodium salt