| Substance groups | Derivatives | Isotype |
| Hydroxamates | Trichostatin A (TSA) | I, II | Suberoylanilide hydroxamic acid (SAHA, vorinostat) | I, II, IV | LBH589 (panobinostat) | I, II, IV | PCI24781 (CRA-024781) | I, IIb | LAQ824 | I, II | PXD101 (belinostat) | I, II, IV | ITF2357 | I, II | SB939 | Unknown | JNJ-16241199 (R306465) | I | m-carboxycinnamic acid bishydroxamide (CBHA) | | Scriptaid | | Oxamflatin | | Pyroxamide | | Cyclic hydroxamic acid containing peptides (CHAPs) | |
| Short chain fatty acids | Butyrate | I, IIa | Valproate | I, IIa | AN-9 | | OSU-HDAC42 | |
| Benzamides | MS-275 (entinostat) | 1, 2, 3, 9 | MGCD0103 | 1, 2, 3, 11 | Pimelic diphenylamide | 1, 2, 3 | M344 | | N-acetyldinaline (CI-994) | |
| Cyclic tetrapeptides | Apicidine | I, II | Trapoxins | | HC-toxin | | Chlamydocin | | Depsipeptide (FR901228 or FK228) (romidepsin) | 1, 2, 4, 6 |
| Sulfonamide anilides | N-2-aminophenyl-3-[4-(4-methylbenzenesulfonylamino)-phenyl]-2-propenamide | |
| Others | Depudecin | | NDH-51 | | KD5150 | Pan-HDACI |
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