 | C4X-114140 | NA | Stable isotopes | |
| rac-Aprepitant-d4 (and enantiomer) |
| C4X-1144131 | 2892260-32-9 (unlabelled) | Stable isotopes | |
| Sitagliptin Impurity 78-d4 |
| C4X-114445 | 1432063-88-1 | Stable isotopes | |
| Sitagliptin-d4 Phosphate |
 | C4X-114448 | 2749855-96-5 | Stable isotopes | |
| rac-Sitagliptin-d4 HCl |
 | C4X-114936 | 2410425-70-4 | Stable isotopes | |
| Cefoperazone-d5 |
 | C4X-115318 | 1992000-80-2 | Stable isotopes | |
| Obeticholic Acid-d5 |
| C4X-115320 | NA | Stable isotopes | |
| Glyco-obeticholic acid D5 |
| C4X-115322 | NA | Stable isotopes | |
| Tauro-Obeticholic Acid D5 |
| C4X-115324 | NA | Stable isotopes | |
| Tauro 6-Ethlchenodeoxycholic Acid-d5 Sodium Salt |
| C4X-115325 | NA | Stable isotopes | |
| Glycine 6-Ethylchenodeoxycholate-d5 |
