 | C4X-152534 | 1795135-61-3(Free Base) | Impurity | |
| Formoterol EP Impurity C (Trifluoroacetic Acid) |
| C4X-152535 | N/A | Impurity | |
| Formoterol EP Impurity D (Trifluoroacetic Acid) |
| C4X-152536 | N/A | Impurity | |
| Formoterol EP Impurity E (Trifluoroacetic Acid) |
| C4X-152537 | N/A | Impurity | |
| "Formoterol EP Impurity H (Trifluoroacetic Acid,Enantiomer Mixture)" |
| C4X-152538 | 532414-36-1(Free Base) | Impurity | |
| "Formoterol EP Impurity I (Trifluoroacetic Acid,Enantiomer Mixture)" |
 | C4X-152539 | 477552-93-5 | Impurity | |
| Formoterol Impurity 39 |
 | C4X-15254 | 1795133-96-8 | Impurity | |
| Formoterol EP Impurity D |
| C4X-152540 | N/A | Impurity | |
| Formoterol Impurity 40 (Mixture of Diastereomers) |
| C4X-152541 | 51582-41-3 | Impurity | |
| Formoterol Impurity 41 |
| C4X-152542 | N/A | Impurity | |
| Formoterol Impurity 42 |
