Table 2. HDAC Inhibition Assays (IC₅₀) Using Class I and Class IIa HDAC Isoforms.

	IC50 (μM)
molecule	HDAC1	HDAC3/NCOR2	HDAC4	HDAC8
3	0.96 ± 0.6	0.33 ± 0.01	>100	7.02 ± 1.53
13	0.39 ± 0.02	0.35 ± 0.003	>100	1.87 ± 0.42
11b	7.9 ± 0.8	50.2 ± 4.7	>100	>100
11e	5.04 ± 0.07	1.97 ± 0.03	>100	>100
SAHAa	0.123 ± 0.003	0.957 ± 0.07	0.101b	1.52b
trichostatin A (TSA)a				0.624
TMP269a			0.275

^aAssay-positive controls according to relevant isoform.

^bData from ref (28).