 | C4X-166516 | 2870-71-5 | Impurity | |
| Homatropine Methylbromide EP Impurity E Bromide (Atropine Methylbromide) |
 | C4X-166517 | 17838-69-6 | Impurity | |
| Ipratropium Impurity 17 |
 | C4X-166519 | N/A | Impurity | |
| 3-Hydroxy Ipratropium Bromide |
| C4X-166520 | N/A | Impurity | |
| 2-Hydroxy Ipratropium Bromide |
| C4X-166521 | N/A | Impurity | |
| 4-Hydroxy Ipratropium Bromide |
 | C4X-166522 | 3979-14-4 | Impurity | |
| Ipratropium Impurity 22 |
 | C4X-166524 | 17812-46-3 | Impurity | |
| Ipratropium Impurity 24 (Mixture of Isomers) |
| C4X-166526 | N/A | Impurity | |
| Ipratropium Impurity 26 |
| C4X-166530 | 259092-15-4 | Impurity | |
| Ipratropium Impurity 30 |
 | C4X-166531 | 3423-25-4 | Impurity | |
| Ipratropium Impurity 31 |
