 | C4X-119415 | NA | Stable isotopes | |
| Lamivudine-13C1-d2 |
| C4X-119426 | 134678-17-4 (unlabelled) | Stable isotopes | |
| Lamivudine-13C-15N2 |
| C4X-119614 | 1330171-61-3 | Stable isotopes | |
| "rac-Vigabatrin-13C,d2 (Major)" |
| C4X-119818 | NA | Stable isotopes | |
| Eltrombopag-d9 |
| C4X-119928 | 101314-97-0 (unlabelled) | Stable isotopes | |
| Simvastatin EP Impurity A-d6 Sodium Salt |
| C4X-12022 | NA | Stable isotopes | |
| Melitracen-d6 HCl |
| C4X-120341 | 80478-42-8 (unlabelled) | Stable isotopes | |
| threo-Hydroxy Bupropion HCl D9 |
| C4X-120342 | 1215071-07-0 (Freebase) | Stable isotopes | |
| erythro-Hydroxy Bupropion HCl |
 | C4X-120347 | 1216893-18-3 | Stable isotopes | |
| Hydroxy Bupropion-d6 |
| C4X-120365 | NA | Stable isotopes | |
| erythro-Hydro Bupropion-d9 HCl?enantiomer? |
