 | C4X-16648 | 35453-19-1 | Impurity | |
| Iohexol EP Impurity K |
 | C4X-16649 | 37441-29-5 | Impurity | |
| Iohexol EP Impurity L |
 | C4X-166511 | 5894-79-1 | Impurity | |
| Ipratropium Impurity 11 |
| C4X-166512 | 22235-74-1 | Impurity | |
| "(1R,3r,5S)-Ipratropium Impurity 12" |
 | C4X-166515 | 183626-76-8 | Impurity | |
| (S)-Ipratropium Bromide EP Impurity E Formate |
 | 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 |
