HDAC6-IN-10 is a potent and specific HDAC6 inhibitor, exhibiting an IC50 value of 0.73 nM. It demonstrates remarkable selectivity towards HDAC6, with a selectivity range of 144 to 10,941-fold over other HDAC isoforms. Furthermore, HDAC6-IN-10 exhibits notable anti-proliferative effects on multiple myeloma cells [1].