| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-139249 | 89268-62-2?free base)? | Impurity | |
| Famotidine EP Impurity B | ||||
 | C4X-13925 | 129083-44-9 | Impurity | |
| Famotidine EP Impurity E | ||||
| C4X-139250 | 95853-51-3 | Impurity | |
| Famotidine Impurity 50 | ||||
 | C4X-139251 | 106649-95-0 | Impurity | |
| Famotidine Impurity 51 | ||||
| C4X-139252 | N/A | Impurity | |
| Famotidine Impurity 52 | ||||
| C4X-139253 | N/A | Impurity | |
| Famotidine Impurity 53 | ||||
| C4X-139254 | N/A | Impurity | |
| Famotidine Impurity 54 | ||||
| C4X-139255 | 95853-46-6 | Impurity | |
| Famotidine impurity 55 | ||||
| C4X-139256 | N/A | Impurity | |
| Famotidine Impurity 56 | ||||
| C4X-139257 | N/A | Impurity | |
| Famotidine Impurity 57 | ||||
