| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-110188 | 2489212-72-6 | Impurity | |
| Linagliptin Impurity 88 | ||||
 | C4X-110189 | N/A | Impurity | |
| Linagliptin Impurity 89 | ||||
 | C4X-11019 | 668270-11-9 | Impurity | |
| Linagliptin Impurity 9 | ||||
| C4X-110190 | 915226-43-6 | Impurity | |
| Linagliptin Impurity 90 | ||||
| C4X-110191 | 168749-30-2 | Impurity | |
| Linagliptin Impurity 91 | ||||
| C4X-110192 | 168749-30-2 | Impurity | |
| Linagliptin Impurity 92 | ||||
 | C4X-110193 | 1214903-21-5 | Impurity | |
| Linagliptin Impurity 93 | ||||
| C4X-110194 | 168749-30-2(free base) | Impurity | |
| Linagliptin Impurity 92 D-lactate | ||||
| C4X-110197 | N/A | Impurity | |
| Linagliptin impurity 97 | ||||
| C4X-110198 | N/A | Impurity | |
| Linagliptin impurity 98 | ||||
