 | C4X-18588 | NA | Stable isotopes | |
| Trimebutine-d5 Fumarate |
| C4X-18621 | NA | Stable isotopes | |
| Triptorelin-d5 Trifluoroacetic Acid Salt |
 | C4X-18642 | 65854-97-9 | Stable isotopes | |
| Phenytoin-d10 |
| C4X-18644 | NA | Stable isotopes | |
| Fosphenytoin Sodium-d10 |
| C4X-187317 | NA | Stable isotopes | |
| Thiamine-13C3 Hydrochloride |
| C4X-187415 | NA | Stable isotopes | |
| Vitamin B12-[13C7] |
 | C4X-18751 | 1794835-73-6 | Stable isotopes | |
| Tandospirone-d8 |
| C4X-187720 | NA | Stable isotopes | |
| Pyridoxine-d3 HCl |
 | C4X-187730 | 1173023-49-8 | Stable isotopes | |
| Pyridoxal-d3 Hydrochloride |
| C4X-188451 | NA | Stable isotopes | |
| Etomidate-d5 |
