 | 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? |
| C4X-1208107 | 171228-49-2 (unlabelled) | Stable isotopes | |
| Posaconazole-d5 |
| C4X-121027 | NA | Stable isotopes | |
| Cefdinir-13C-15N2 |
 | C4X-121123 | 60902-28-5 | Stable isotopes | |
| Acetaminophen-d3 |
 | C4X-121127 | 64315-36-2 | Stable isotopes | |
| Acetaminophen-d4 (major) |
| C4X-121239 | NA | Stable isotopes | |
| [2H6]-Ceftazidime sodium salt |
