 | C4X-10831 | 300543-56-0 | Impurity | |
| Levocetirizine Impurity 1 (Chlorobenzhydryl piperazine) |
 | C4X-108310 | 163837-48-7 | Impurity | |
| S-Levocetirizine |
 | C4X-108311 | 246870-46-2 | Impurity | |
| Levocetirizine Impurity 11 |
 | C4X-108312 | 1232460-31-9 | Impurity | |
| ??????C4X-108324?Levocetirizine Impurity 12 |
 | C4X-108313 | 303-26-4 | Impurity | |
| Cetirizine EP Impurity A |
 | C4X-108316 | 134-85-0 | Impurity | |
| Levocetirizine Impurity 16 |
 | C4X-108317 | 126517-38-2 | Impurity | |
| Levocetirizine Impurity 17 |
 | C4X-108318 | 909779-33-5 | Impurity | |
| Levocetirizine amide impurity HCl |
| C4X-108319 | N/A | Impurity | |
| Levocetirizine Impurity 19 |
 | C4X-10832 | 1000690-91-4 | Impurity | |
| Cetirizine EP Impurity B |
