RGFP966 is a selective inhibitor of histone deacetylase 3 (HDAC3) with an IC50 value of 80 nM and no inhibition of any other HDACs at concentrations up to 15 µM. In mouse studies, RGFP966 facilitated extinction of cocaine-seeking behavior and enhanced long-term object memory acquisition and consolidation. In a rat study, RGFP966 ameliorated amyloid-β oligomer-induced synaptic plasticity impairment. RGFP966 was also found to reduce proliferation and inducd differentiation in mouse lymphoid and myeloid malignancies.
RGFP966 changes signal-specific primary auditory cortical plasticity. It is highly effective in cardiomyopathy-associated pathologies.