1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-, ester with phenyl(2,3,4-trihydroxyphenyl)methanone 1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-, ester withphenyl(2,3,4-trihydroxyphenyl)methanone 107853-40-7 109766-97-4 110120-21-3 114355-52-1 2,3,4-Trihydroxybenzophenone, 6-diazo-5-oxo-1-naphthalenesulfonyl chloride adduct 68389-54-8 68510-93-0 EINECS 270-931-7