Tacedinaline (CI994, PD-123654, GOE-5549, Acetyldinaline) is a selective class I HDAC inhibitor with IC50 of 0.9, 0.9, 1.2, and >20 ?M for human HDAC 1, 2, 3, and 8, respectively. Phase 3. *For Research & Development use only. Product is not intended for drug, household, or human consumption.