 | C4X-108364 | N/A | Impurity | |
| Levocetirizine Impurity 64 |
| C4X-108365 | N/A | Impurity | |
| Levocetirizine Impurity 65 |
 | C4X-108366 | 439858-21-6 | Impurity | |
| Levocetirizine Impurity 66 |
| C4X-10837 | 164726-80-1 | Impurity | |
| Cetirizine EP Impurity G Hydrochloride |
| C4X-10838 | 83881-46-3 | Impurity | |
| Levocetirizine Impurity 8 |
| C4X-10839 | N/A | Impurity | |
| Levocetirizine Impurity 9 |
 | C4X-10841 | 162401-43-6 | Impurity | |
| Roflumilast Impurity 1 |
 | C4X-108410 | 127842-54-0 | Impurity | |
| Roflumilast Impurity 10 |
 | C4X-108411 | 159783-78-5 | Impurity | |
| Roflumilast Impurity 11 |
 | C4X-108412 | 292135-78-5 | Impurity | |
| Roflumilast N-Oxide |
