Entinostat Description A synthetic benzamide derivative with potential antineoplastic activity. Entinostat binds to and inhibits histone deacetylase, an enzyme that regulates chromatin structure and gene transcription. Specifications Cas No. 209783-80-2 Product ID E5477 Product Name Entinostat Synonym SNDX-275; MS-275 Formula Wt. 376.4