ESTER OF 2-DIAZO-1-NAPHTHOL-4-SULFONE WITH 2,3,4-TRIHYDROXY-BENZOPHENONE; ESTER OF 2-DIAZO-1-NAPHTHOL-5-SULFONE WITH 2,3,4,4'-TETRAHYDROXY-BENZOPHENONE; 2-diazo-1-naphthol-5-sulfonic acid, ester with 2,3,4,4'-tetrahydroxy benzophenone; 1-Naphthalenesulfonic acid, 6-Diazo-5,6-dihydro-5-oxo-, ester with (4-hydroxyphenyl) (2,3,4-trihydroxyphenyl)methanone; 2,3,4,4'-Tetrahydroxybenzophenone-1,2-naphthoquinonediazide-5-sulfonic acid ester; tetrahydroxybenzophenone naphthoquinonediazide-5-sulfonate
