 | C4X-12511 | N/A | Impurity | |
| Indisetron Impurity 1 |
| C4X-12512 | N/A | Impurity | |
| Indisetron Impurity 2 |
| C4X-12521 | 145513-33-3(free acid) | Impurity | |
| Perindopril EP Impurity I?Enantiomer Mixture?tert-Butylamine Salt |
 | C4X-125210 | 144540-75-0 | Impurity | |
| Perindopril Impurity 10 |
 | C4X-125211 | 169061-41-0 | Impurity | |
| Perindopril Impurity 11 |
| C4X-125212 | N/A | Impurity | |
| Perindopril Impurity 12 |
| C4X-125213 | 65166-97-4 | Impurity | |
| Perindopril Impurity 13 |
 | C4X-125214 | 685523-06-2 | Impurity | |
| Perindopril EP Impurity J |
 | C4X-125215 | 2165676-00-4 | Impurity | |
| Perindopril EP Impurity K |
 | C4X-125216 | 111836-22-7 | Impurity | |
| Perindopril EP Impurity L |
