| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-139237 | 503-66-2 | Impurity | |
| Famotidine Impurity 37 | ||||
 | C4X-139238 | 24423-98-1 | Impurity | |
| Famotidine Impurity 38 | ||||
| C4X-139239 | N/A | Impurity | |
| Famotidine Impurity 39 | ||||
 | C4X-13924 | 76824-16-3 | Impurity | |
| Famotidine EP Impurity D | ||||
| C4X-139240 | N/A | Impurity | |
| Famotidine Impurity 40 | ||||
| C4X-139241 | N/A | Impurity | |
| Famotidine Impurity 41 | ||||
| C4X-139242 | N/A | Impurity | |
| Famotidine Impurity 42 | ||||
 | C4X-139243 | 29671-92-9 | Impurity | |
| Famotidine Impurity 43 | ||||
| C4X-139244 | 76823-97-7?free base? | Impurity | |
| Famotidine EP Impurity G?Maleate Salt? | ||||
| C4X-139245 | 1644079-90-2 | Impurity | |
| Famotidine Impurity 45 | ||||
