CAS Registry Number

CAS 131-56-6 — 2,4-Dihydroxybenzophenone

2,4-Dihydroxybenzophenone is a UV-absorbing chemical widely used as a photostabilizer in plastics, cosmetics, and sunscreens to prevent degradation from sunlight. It is also employed in pharmaceutical formulations and as an intermediate in organic synthesis. This white to off-white crystalline powder has a CAS number of 131-56-6, a molecular formula of 2,4-(OH)2-C6H3COC6H5, and a molecular weight of 214.22 g/mol. It should be stored at ambient conditions and handled with caution, as it carries a "Warning" signal word for safety. Molekula supplies 2,4-Dihydroxybenzophenone from research to bulk quantities with full documentation and ISO 9001:2015 traceability.