| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-167310 | 1189987-23-2 | Stable isotopes | |
| Leflunomide-d4 | ||||
 | C4X-167311 | 1185240-22-5 | Stable isotopes | |
| Leflunomide EP Impurity B-d4 (Teriflunomide-d4) | ||||
 | C4X-167616 | 586954-09-8 | Stable isotopes | |
| Levodopa EP Impurity C-d3 (S-isomer) (L-3-O-Methyldopa-d3) | ||||
| C4X-167724 | NA | Stable isotopes | |
| (-)-Norgestrel-d6 | ||||
| C4X-167725 | NA | Stable isotopes | |
| Levonorgestrel-d7 | ||||
 | C4X-167821 | 1217780-14-7 | Stable isotopes | |
| Thyroxine-13C6 | ||||
 | C4X-167822 | 1431868-11-9 | Stable isotopes | |
| Levothyroxine-13C9-15 | ||||
| C4X-167834 | 1217843-81-6 | Stable isotopes | |
| "3,3',5-Triiodo-L-thyronine-13C6" | ||||
| C4X-167947 | NA | Stable isotopes | |
| Lidocaine-d6 HCl | ||||
| C4X-168225 | 1322625-54-6 | Stable isotopes | |
| Lopinavir-d8 | ||||
