 | C4X-193535 | 85309-91-7 | Impurity | |
| Vilanterol Impurity 35 |
| C4X-193539 | 452339-71-8 | Impurity | |
| Vilanterol Impurity 39 |
| C4X-19354 | N/A | Impurity | |
| Vilanterol Impurity 4 |
| C4X-193550 | N/A | Impurity | |
| ???????C4X-193510?Vilanterol Impurity 50 HCl |
 | C4X-19361 | 6628-04-2 | Impurity | |
| Dequalinium EP Impurity A |
 | C4X-193613 | 634-38-8 | Impurity | |
| Dequalinium Impurity 13 |
| C4X-19362 | N/A | Impurity | |
| Dequalinium EP Impurity B Iodide |
| C4X-19364 | 16355-92-3 | Impurity | |
| Dequalinium Impurity 4 |
| C4X-19365 | 51309-10-5 | Impurity | |
| Dequalinium Impurity 5 |
| C4X-19366 | N/A | Impurity | |
| Dequalinium Impurity 6 HI |
