Synonyms: Benzophenone, 2,2,4,4-tetrahydroxy-;2,2',4,4'-Tetrahydroxybenzophenone (UV-2);Eusorb UV-246;di(2,4-dihydroxyphenyl)methanone;BP-2;Sumisorb 150;Uvinul D-50;Methanone, bis (2,4-dihydroxyphenyl)-;2,2',4,4'-Tetrahydroxy benzophenone (Benzophenone 2);bis(2,4-dihydroxyphenyl)methanone;Methanone,bis(2,4-dihydroxyphenyl)-;Seesorb 106;2,2',4,4'-Tetrahydroxy Benzophenone;2,2',4,4'-Tetrahydroxybenzophenone (BP-2);2,2'4,4'Tetrahydroxy Benzophenone (UV Absorber D50);