 | 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 |
| C4X-121313 | NA | Stable isotopes | |
| Roxatidine-d10 Hemioxalate |
| C4X-12164 | NA | Stable isotopes | |
| Mifepristone-d3 |
| C4X-12165 | NA | Stable isotopes | |
| N-Demethyl Mifepristone-d3 |
| C4X-12166 | NA | Stable isotopes | |
| Mifepristone-D6 |
| C4X-12167 | NA | Stable isotopes | |
| Hydroxy Mifepristone-d6 |
