 | C4X-115552 | NA | Stable isotopes | |
| Sitafloxacin-D4 |
 | C4X-115726 | 1279034-15-9 | Stable isotopes | |
| Dextromethorphan-d3 HBr |
| C4X-115727 | 1426174-16-4 | Stable isotopes | |
| Dextrorphan-d3 Tartrate Salt |
 | C4X-115728 | 524713-59-5 | Stable isotopes | |
| Dextrorphan-d3 Tartrate (Dextromethorphan EP Impurity B-d3 Tartrate) |
 | C4X-116267 | 1285539-74-3 | Stable isotopes | |
| Febuxostat-d7 |
| C4X-116512 | 50-02-2(Unlabelled) | Stable isotopes | |
| Dexamethasone-d4 |
| C4X-116629 | NA | Stable isotopes | |
| Sodium Valproate-d4 |
 | C4X-116630 | 87745-17-3 | Stable isotopes | |
| Valproic Acid-d4 |
| C4X-116674 | NA | Stable isotopes | |
| Valproic Acid-d14 Sodium Salt |
| C4X-116949 | 1279031-70-7 | Stable isotopes | |
| Rosuvastatin-d3 Sodium Salt |
