 | C4X-108337 | N/A | Impurity | |
| Cetirizine Impurity 37 HCl (Mixture of Isomers) |
| C4X-108338 | N/A | Impurity | |
| Cetirizine Impurity 38 HCl |
| C4X-108339 | N/A | Impurity | |
| Cetirizine Impurity 39 |
 | C4X-10834 | 856841-95-7 | Impurity | |
| Cetirizine EP Impurity D DiHCl |
| C4X-108340 | N/A | Impurity | |
| Cetirizine Impurity 40 DiHCl |
| C4X-108341 | N/A | Impurity | |
| Levocetirizine Impurity 41 |
| C4X-108342 | N/A | Impurity | |
| Levocetirizine Impurity 42 |
| C4X-108343 | 1116338-10-3 | Impurity | |
| Levocetirizine Impurity 43 |
| C4X-108344 | 442863-80-1 | Impurity | |
| Levocetirizine Impurity 44 |
 | C4X-108345 | 1150310-68-1 | Impurity | |
| Levocetirizine Impurity 45 |
