 | C4X-183554 | 880-09-1 | Impurity | |
| Hydroxychloroquine Impurity 54 |
 | C4X-183555 | 86-47-5 | Impurity | |
| Hydroxychloroquine Impurity 55 |
 | C4X-183556 | 765-38-8 | Impurity | |
| Hydroxychloroquine Impurity 56 |
 | C4X-183557 | 860205-48-7 | Impurity | |
| Hydroxychloroquine Impurity 57 |
| C4X-18356 | 6281-58-9 | Impurity | |
| Hydroxychloroquine EP Impurity F |
 | C4X-183560 | 137433-23-9 | Impurity | |
| Hydroxychloroquine R-isomer Impurity |
| C4X-183562 | N/A | Impurity | |
| Hydroxychloroquine impurity 62 |
| C4X-183564 | N/A | Impurity | |
| Hydroxychloroquine impurity 64 |
| C4X-183565 | N/A | Impurity | |
| Hydroxychloroquine impurity 65 |
| C4X-183566 | N/A | Impurity | |
| Hydroxychloroquine Impurity 66 |
