 | C4X-196911 | 38030-57-8 | Impurity | |
| 4-Oxo Tretinoin (4-Oxo Retinoic Acid) |
 | C4X-196912 | 3899-20-5 | Impurity | |
| Tretinoin Impurity 12 |
 | C4X-196913 | 66592-72-1 | Impurity | |
| 4-Hydroxy-all-trans-Retinoic Acid |
 | C4X-196914 | 68070-35-9 | Impurity | |
| Isotretinoin EP Impurity F |
 | C4X-196916 | 81444-57-7 | Impurity | |
| "Isotretinoin EP Impurity G (5,6-Epoxy-13-cis Retinoic Acid) (and enantiomer)" |
 | C4X-196917 | 75281-25-3 | Impurity | |
| Isotretinoin EP Impurity I |
 | C4X-196918 | 71748-58-8 | Impurity | |
| Isotretinoin EP Impurity H |
 | C4X-19692 | 5300-03-8 | Impurity | |
| Isotretinoin EP Impurity D |
 | C4X-19694 | 81121-20-2 | Impurity | |
| Tretinoin EP Impurity F (4-Methoxy Retinoic Acid) |
 | C4X-19695 | 3555-80-4 | Impurity | |
| "Tretinoin EP Impurity C (Isotretinoin EP Impurity C, 11,13-di-cis-Retinoic Acid)" |
