| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-18279 | 1879009-96-7 | Impurity | |
| Methionine Impurity D | ||||
 | C4X-18281 | 6623-56-9 | Impurity | |
| Methenamine Impurity 1 | ||||
 | C4X-18282 | 62190-92-5 | Impurity | |
| Methenamine Impurity 2 | ||||
 | C4X-18283 | 185309-32-4 | Impurity | |
| Methenamine Impurity 3 | ||||
| C4X-18284 | 16352-36-6 | Impurity | |
| Methenamine Impurity 4 | ||||
 | C4X-18291 | 112809-52-6 | Impurity | |
| Letrozole EP Impurity A | ||||
| C4X-182910 | N/A | Impurity | |
| Letrozole Impurity 10 | ||||
| C4X-182911 | N/A | Impurity | |
| Letrozole Impurity 11 | ||||
| C4X-182912 | N/A | Impurity | |
| Letrozole Impurity 12 | ||||
| C4X-182913 | N/A | Impurity | |
| Letrozole Impurity 13 | ||||
