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Benzophenone-n — Benzophenone, the base structure of these sunscreening agents Benzphenone 1 – benzophenone 12 (BP 1 –BP 12) are UVA/UVB absorbers. Most of them are used in sunscreens. Benzophenone 1 (2,4 dihydroxybenzophenone) Benzophenone 2 (2,2 ,4,4… … Wikipedia