 | C4X-138122 | NA | Stable isotopes | |
| S-Adenosyl-L-Methionine-d3 |
| C4X-138124 | NA | Stable isotopes | |
| S-(5'-Adenosyl)-L-methionine-13C5 Sulfate Salt (Synthetic)(Mixture of Diastereomers) |
| C4X-138837 | NA | Stable isotopes | |
| Azacitidine Impurity 37 (5-(Hydroxymethyl)-2'-deoxycytidine-d3) |
| C4X-138923 | 1134189-63-1 | Stable isotopes | |
| Budesonide d6 |
 | C4X-138925 | 1105542-94-6 | Stable isotopes | |
| Budesonide-d8 (Mixture of Diastereomers) |
| C4X-139217 | NA | Stable isotopes | |
| Famotidine-d4 (Major) |
| C4X-139219 | 1185241-48-8 | Stable isotopes | |
| Famotidine-13C3 |
| C4X-13938 | 1641940-94-4 | Stable isotopes | |
| Alfacalcidol-d6 |
| C4X-139419 | NA | Stable isotopes | |
| Ondansetron-13C-d3 |
| C4X-139519 | NA | Stable isotopes | |
| Tetrahydrofolic Acid-13C5 |
