 | C4X-137176 | NA | Stable isotopes | |
| N-Desmethyl Levofloxacin-d8 |
 | C4X-137221 | 1233921-75-9 | Stable isotopes | |
| Gemcitabine EP Impurity C-13C-15N2 |
| C4X-137320 | NA | Stable isotopes | |
| Tryptophan Impurity 20 D9 |
 | C4X-137848 | 1356579-56-0 | Stable isotopes | |
| Daptomycin-d5 |
| C4X-138121 | NA | Stable isotopes | |
| S-Adenosyl-L-Methionine D3 |
| 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) |
