 | C4X-183529 | N/A | Impurity | |
| Hydroxychloroquine Impurity 29 |
 | C4X-18353 | 4298-15-1 | Impurity | |
| Hydroxychloroquine EP Impurity C |
| C4X-183533 | 74509-79-8 | Impurity | |
| Hydroxychloroquine Impurity 33 |
| C4X-183547 | N/A | Impurity | |
| Hydroxychloroquine Impurity 47 |
 | C4X-183548 | 1476-52-4 | Impurity | |
| Hydroxychloroquine EP Impurity D |
 | C4X-18355 | 10500-64-8 | Impurity | |
| Hydroxychloroquine EP Impurity E |
 | C4X-183551 | 103152-84-7 | Impurity | |
| Hydroxychloroquine EP Impurity B |
 | C4X-183553 | 109-83-1 | Impurity | |
| Hydroxychloroquine Impurity 53 |
 | C4X-183554 | 880-09-1 | Impurity | |
| Hydroxychloroquine Impurity 54 |
 | C4X-183556 | 765-38-8 | Impurity | |
| Hydroxychloroquine Impurity 56 |
