 | C4X-196913 | 66592-72-1 | Impurity | |
| 4-Hydroxy-all-trans-Retinoic Acid |
 | C4X-196914 | 68070-35-9 | Impurity | |
| Isotretinoin EP Impurity F |
 | C4X-196915 | 49816-69-5 | Impurity | |
| Tretinoin Impurity 15 |
 | 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-196920 | 173449-96-2 | Impurity | |
| Tretinoin lmpurity 20 |
| C4X-196921 | N/A | Impurity | |
| Tretinoin Impurity 21 |
| C4X-196922 | N/A | Impurity | |
| Tretinoin Impurity 22 |
