| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-152563 | 67346-59-2 | Impurity | |
| Formoterol Impurity 63 | ||||
| C4X-152567 | 871266-45-4 | Impurity | |
| Formoterol Impurity 67 | ||||
| C4X-152568 | 63660-03-7 | Impurity | |
| Formoterol Impurity 68 | ||||
| C4X-152569 | 100865-09-6 | Impurity | |
| Formoterol Impurity 69 | ||||
| C4X-15257 | 23239-32-9 | Impurity | |
| Formoterol EP Impurity G | ||||
| C4X-152571 | 71250-20-9 | Impurity | |
| Formoterol Impurity 71 | ||||
 | C4X-152572 | 108971-53-5 | Impurity | |
| Formoterol Impurity 72 | ||||
| C4X-152573 | N/A | Impurity | |
| Formoterol Impurity 73 | ||||
| C4X-152574 | N/A | Impurity | |
| Formoterol Impurity 74 | ||||
| C4X-152575 | N/A | Impurity | |
| Formoterol Impurity 75 | ||||
