 | C4X-20521 | 348625-84-3 | Impurity | |
| Fondaparinux sodium impurity 1 |
| C4X-205211 | N/A | Impurity | |
| Fondaparinux Sodium Impurity 11 |
| C4X-205212 | N/A | Impurity | |
| Fondaparinux Sodium Impurity 12 |
| C4X-20522 | N/A | Impurity | |
| Fondaparinux sodium impurity 2 |
| C4X-20523 | N/A | Impurity | |
| Fondaparinux sodium impurity 3 |
| C4X-20525 | N/A | Impurity | |
| Fondaparinux Sodium Impurity 5 |
 | C4X-20552 | 3083-77-0 | Impurity | |
| Vidarabine Impurity 2 |
| C4X-20553 | 29984-33-6 | Impurity | |
| Vidarabine Impurity 3 |
 | C4X-20562 | 14599-46-3 | Impurity | |
| Trifluridine Related Compound A |
| C4X-20563 | 7057-42-3 | Impurity | |
| Trifluridine Impurity 3 |
