 | C4X-130013 | 1356841-89-8 | Stable isotopes | |
| Tacrolimus 13CD2 |
 | C4X-130322 | NA | Stable isotopes | |
| Roxithromycin-d7 |
| C4X-131110 | NA | Stable isotopes | |
| "Cyclosporin A-13C2,d4 Acetate (major)" |
| C4X-13119 | NA | Stable isotopes | |
| Cyclosporin A-d4 (Major) |
 | C4X-131248 | 1276197-54-6 | Stable isotopes | |
| Pregabalin-d4 |
 | C4X-13145 | 1432063-93-8 | Stable isotopes | |
| Retigabine (Ezogabine)-d5 DiHCl |
| C4X-13147 | 1285886-70-5 | Stable isotopes | |
| Retigabine-d4 Dihydrochloride |
| C4X-131634 | NA | Stable isotopes | |
| rac Fosfomycin-D5 (Major) Benzylamine Salt |
| C4X-132211 | 93909-48-9 | Stable isotopes | |
| Propafenone-d5 HCl |
 | C4X-132212 | 1188265-48-6 | Stable isotopes | |
| 5-Hydroxy Propafenone-d5 HCl |
