 | C4X-183544 | N/A | Impurity | |
| Hydroxychloroquine Impurity 44 |
| C4X-183545 | N/A | Impurity | |
| Hydroxychloroquine Impurity 45 |
| C4X-183546 | N/A | Impurity | |
| Hydroxychloroquine Impurity 46 |
| C4X-183547 | N/A | Impurity | |
| Hydroxychloroquine Impurity 47 |
 | C4X-183548 | 1476-52-4 | Impurity | |
| Hydroxychloroquine EP Impurity D |
 | C4X-183549 | 58175-86-3 | Impurity | |
| Hydroxychloroquine Impurity 49 |
 | C4X-18355 | 10500-64-8 | Impurity | |
| Hydroxychloroquine EP Impurity E |
 | C4X-183550 | 58175-87-4 | Impurity | |
| Hydroxychloroquine Impurity 50 |
 | C4X-183551 | 103152-84-7 | Impurity | |
| Hydroxychloroquine EP Impurity B |
 | C4X-183553 | 109-83-1 | Impurity | |
| Hydroxychloroquine Impurity 53 |
