6420-03-7 Benzoic acid, 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-hydroxy-, disodium salt C.I. 23655 C.I. Direct Orange 31, disodium salt Diaphtamine Fast Orange PRS Diazol Brilliant Orange RN Direct Fast Orange PRN NSC326199