 | C4X-21834 | 4243-74-7 | Impurity | |
| Dydrogesterone Impurity 4 |
 | C4X-21835 | 5488-51-7 | Impurity | |
| Dydrogesterone Impurity 5 |
 | C4X-21836 | 4243-73-6 | Impurity | |
| 20?-Dihydrodydrogesterone |
 | C4X-21837 | 19592-55-3 | Impurity | |
| Dydrogesterone Impurity 7 |
| C4X-21838 | N/A | Impurity | |
| Dydrogesterone Impurity 8 |
| C4X-21839 | 99958-08-4 | Impurity | |
| Dydrogesterone Impurity 9 |
| C4X-2184 | 496807-11-5 | Impurity | |
| Beraprost Sodium (Mixture of Diastereomers) |
| C4X-218410 | 70073-58-4 | Impurity | |
| Beraprost Impurity 10 |
| C4X-218411 | 88277-19-4 | Impurity | |
| Beraprost Impurity 11 |
| C4X-218413 | N/A | Impurity | |
| Beraprost Impurity 13 |
