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  • Smiles: C1=CC=C(C(=C1)N)NC(=O)C2=CC=C(C=C2)CNC(=O)OCC3=CN=CC=C3
  • Aliases: MS275; MS-275; MS 2275; SNDX275; SNDX-275; SNDX 275; Entinostat; pyridin-3-ylmethyl N-[[4-[(2-aminophenyl)carbamoyl]phenyl]methyl]carbamate
  • Cas Number: 209783-80-2
  • Molecular Weight: 376.416
  • Molecular Formula: C21H20N4O3


Entinostat is a histone deacetylase (HDAC) inhibitor displaying antiproliferative and antineoplastic effects. Entinostat induces cyclin-dependent kinase inhibitor 1A (p21/CIP1/WAF1), which slows cell growth, differentiation, and tumor development in vivo. Entinostat is potentially used as an antitumor drug in combination with other drugs like adriamycin, PARP inhibitors and Hsp90 inhibitors.