Synonyms: 1-Naphthalenesulfonicacid, 6-diazo-5,6-dihydro-5-oxo-, 4-benzoyl-1,2,3-benzenetriyl ester (9CI);1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-, triester with2,3,4-trihydroxybenzophenone (7CI,8CI); Benzophenone, 2,3,4-trihydroxy-,tris(6-diazo-5,6-dihydro-5-oxo-1-naphthalenesulfonate) (8CI); 2,3,4-Trihydroxybenzophenone1,2-naphthoquinone-2-diazide-5-sulfonic acid triester;2,3,4-Trihydroxybenzophenone naphthoquinone-1,2-diazide-5-sulfonic acid ester(1:3); 2,3,4-Trihydroxybenzophenonetris(1,2-naphthoquinone-2-diazide-5-sulfonate); 2,3,4-Trihydroxybenzophenonetris(1,2-naphthoquinonediazide-5-sulfonate;2,3,4-Tris(1,2-naphthoquinone-2-diazido-5-sulfonyloxy)benzophenone;2,3,4-Tris(1-oxo-2-diazonaphthoquinone-5-sulfonyloxy)benzophenone; NT 300; NT300 (ester); NT Ester-5-sulfonic acid; PAC III; PIC 3; PIC 3 (sulfonate)