| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-1144135 | 1360872-54-3 | Impurity | |
| Sitagliptin Impurity 135 | ||||
| C4X-1144136 | 837430-22-5 | Impurity | |
| Sitagliptin Impurity 136 HCl | ||||
| C4X-1144137 | N/A | Impurity | |
| Sitagliptin Impurity 137 | ||||
 | C4X-1144138 | 1283583-85-6 | Impurity | |
| Sitagliptin Impurity 138 | ||||
| C4X-1144139 | N/A | Impurity | |
| Sitagliptin Impurity 39 | ||||
| C4X-114414 | 2072867-07-1 | Impurity | |
| Sitagliptin Impurity 14 | ||||
| C4X-1144140 | N/A | Impurity | |
| Sitagliptin Impurity 40 | ||||
 | C4X-114415 | 1217809-78-3 | Impurity | |
| Sitagliptin Impurity 15 | ||||
 | C4X-114416 | 849832-73-1 | Impurity | |
| Sitagliptin Impurity 16 | ||||
| C4X-114417 | 1036273-20-7 | Impurity | |
| Sitagliptin Impurity 17 | ||||
