| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-15252 | 1224588-66-2 | Impurity | |
| Formoterol EP Impurity B | ||||
 | C4X-152520 | N/A | Impurity | |
| Formoterol Impurity 20 | ||||
 | C4X-152522 | 1049695-95-5 | Impurity | |
| Formoterol Impurity 22 HCl | ||||
 | C4X-152523 | 43229-01-2 | Impurity | |
| Formoterol Impurity 23 | ||||
| C4X-152528 | 201677-59-0 | Impurity | |
| Formoterol Impurity 28 | ||||
| C4X-15253 | 1795135-61-3 | Impurity | |
| Formoterol EP Impurity C | ||||
| C4X-152531 | 477552-94-6 | Impurity | |
| Formoterol Impurity 31 | ||||
| C4X-152532 | N/A | Impurity | |
| Formoterol EP Impurity B (Trifluoroacetic Acid) | ||||
 | C4X-15254 | 1795133-96-8 | Impurity | |
| Formoterol EP Impurity D | ||||
 | C4X-15255 | 1616967-26-0 | Impurity | |
| Formoterol EP Impurity E | ||||
