C.I. Direct Orange 31
CAS No. 6420-03-7
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;C.I.23655;Direct Orange 31