| Apremilast Impurity 3 | 2097600-16-1 | Ax-16910 |
| Phthalamide Apremilast | 1802246-60-1 | Ax-16909 |
| Apremilast Impurity 2 | 2095036-40-9 | Ax-16908 |
| Des-N-acetyl apremilast | 635705-72-5 | Ax-16907 |
| 3-bromo-4-fluoropyridine | 116922-60-2 | Ax-16906 |
| 4-fluoro-2-nitropyridin-3-ol | 1609165-98-1 | Ax-16905 |
| 2-amino-4-fluoropyridin-3-ol | 1003710-90-4 | Ax-16904 |
| 3-bromo-4-fluoropyridin-2-amine | 1417407-29-4 | Ax-16903 |
| ethyl (S)-thiazolidine-4-carboxylate | 137941-34-5 | Ax-16901 |
| ethyl (S)-3-((S)-5-oxopyrrolidine-2-carbonyl)thiazolidine-4-carboxylate | 131805-70-4 | Ax-16900 |