 | C4X-167321 | 202057-74-7 | Impurity | |
| Leflunomide Impurity 21 |
 | C4X-16733 | 61643-23-0 | Impurity | |
| Leflunomide EP Impurity C |
 | C4X-16734 | 42831-50-5 | Impurity | |
| Leflunomide EP Impurity D |
 | C4X-16735 | 208401-20-1 | Impurity | |
| Leflunomide EP Impurity E |
 | C4X-16736 | 1403564-06-6 | Impurity | |
| Leflunomide EP Impurity F |
 | C4X-16737 | 724429-16-7 | Impurity | |
| Leflunomide EP Impurity G |
 | C4X-16738 | 24522-30-3 | Impurity | |
| Leflunomide EP Impurity H |
 | C4X-16739 | 163451-81-8 | Impurity | |
| Leflunomide EP Impurity B (Teriflunomide) |
 | C4X-16761 | 27244-64-0 | Impurity | |
| Levodopa EP Impurity A |
 | C4X-167610 | 60-18-4 | Impurity | |
| Levodopa EP Impurity B |
