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Small molecules under investigation
| Small molecule | Known mode of action | Used clinically |
|---|---|---|
| 4-phenylbutyrate | Histone deacetylase inhibitor | Yes, orally |
| Trichostatin A | Histone deacetylase inhibitor | No |
| Hydroxyurea | Ribonucleotide reductase inhibitor | Yes, orally |
| Sulforaphane | Phase II detoxification enzyme inducer | Yes, clinical trials, orally |
