 | C4X-208121 | NA | Stable isotopes | |
| Teprenone Impurity 10-13C3 |
| C4X-20823 | NA | Stable isotopes | |
| Visomitin-d15 |
| C4X-20841 | NA | Stable isotopes | |
| Lusutrombopag-d13 |
| C4X-208511 | NA | Stable isotopes | |
| Nicergoline Impurity 11 D3 |
| C4X-208513 | NA | Stable isotopes | |
| Nicergoline-13C-d3 |
| C4X-208514 | NA | Stable isotopes | |
| Nicergoline Impurity 14 D3 |
| C4X-208518 | NA | Stable isotopes | |
| Nicergoline Impurity 18 D4 |
| C4X-209513 | NA | Stable isotopes | |
| "1,5-Anhydro-D-glucitol-13C6" |
 | C4X-209610 | 1279033-05-4 | Stable isotopes | |
| Benazeprilat-d5 (Benazepril EP Impurity C-d5) |
 | C4X-20969 | 1279026-26-4 | Stable isotopes | |
| Benazepril-d5 HCl |
