 | C4X-183514 | 103152-84-7 | Impurity | |
| Hydroxychloroquine EP Impurity B Hydrogen sulfate |
 | C4X-183515 | 1476-52-4 | Impurity | |
| Hydroxychloroquine Sulfate EP Impurity D DiHBr (Desethyl Chloroquine DiHBr) |
 | C4X-183517 | N/A | Impurity | |
| Hydroxychloroquine Impurity 17 |
| C4X-183518 | 860544-46-3 | Impurity | |
| Hydroxychloroquine Impurity 18 |
 | C4X-183519 | 86-47-5 | Impurity | |
| Hydroxychloroquine Impurity 19 |
| C4X-18352 | 103152-84-7 | Impurity | |
| Hydroxychloroquine EP Impurity B sodium salt |
| C4X-183520 | 630067-21-9 | Impurity | |
| Hydroxychloroquine Impurity 20 |
 | C4X-183521 | 927-55-9 | Impurity | |
| Hydroxychloroquine Impurity 21 |
| C4X-183522 | N/A | Impurity | |
| Hydroxychloroquine Impurity 22 |
 | C4X-183523 | 69559-11-1 | Impurity | |
| Hydroxychloroquine Impurity 23 |
