Tubastatin A (Hydrochloride) (Standard) is the analytical standard of Tubastatin A (Hydrochloride). This product is intended for research and analytical applications. Tubastatin A Hydrochloride (Tubastatin A HCl) is a potent and selective HDAC6 inhibitor with IC50 of 15 nM in a cell-free assay, and is selective (1000-fold more) against all other isozymes except HDAC8 (57-fold more). Tubastatin A Hydrochloride also inhibits HDAC10 and metallo-beta-lactamase domain-containing protein 2 (MBLAC2).