BRD73954 is a dual inhibitor of histone deacetylase 6 (HDAC6) and HDAC8 (IC50s = 36 and 120 nM, respectively). It is selective for HDAC6 and -8 over HDAC1-5, -7, and -9 (IC50s = 12, 9, 23, >33, >33, 13, and >33 μM, respectively). BRD73954 (10 μM) increases acetylation of α-tubulin, a known HDAC6 substrate, but not histone H3, a substrate for HDAC1, -2, and -3, in HeLa cells.
