| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-18293 | N/A | Impurity | |
| Letrozole Impurity 3 | ||||
 | C4X-182930 | 64407-07-4 | Impurity | |
| Letrozole Impurity 30 | ||||
 | C4X-182938 | 874-86-2 | Impurity | |
| Letrozole Impurity 38 | ||||
| C4X-182939 | 28188-41-2 | Impurity | |
| Letrozole Impurity 39 | ||||
 | C4X-18294 | 112809-25-3 | Impurity | |
| Letrozole Impurity 4 | ||||
| C4X-18295 | 32446-66-5 | Impurity | |
| Letrozole Impurity 5 | ||||
 | C4X-18296 | 134521-16-7 | Impurity | |
| Letrozole Impurity 6 | ||||
| C4X-18297 | 1644566-39-1 | Impurity | |
| Letrozole Impurity 7 | ||||
| C4X-18298 | 2170106-13-3 | Impurity | |
| Letrozole Impurity 8 | ||||
 | C4X-18299 | 143030-54-0 | Impurity | |
| Letrozole Impurity 9 | ||||
