| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | 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 | ||||
| C4X-139246 | 84545-70-0 | Impurity | |
| Famotidine Impurity 46 | ||||
| C4X-139247 | N/A | Impurity | |
| Famotidine Impurity 47 | ||||
| C4X-139248 | N/A | Impurity | |
| Famotidine Impurity 48 | ||||
| C4X-139249 | 89268-62-2?free base)? | Impurity | |
| Famotidine EP Impurity B | ||||
