 | C4X-167849 | 106822-80-4 | Impurity | |
| Levothyroxine Impurity 49 |
 | C4X-16785 | 1041-01-6 | Impurity | |
| Levothyroxine EP Impurity E |
 | C4X-16786 | 911661-90-0 | Impurity | |
| Levothyroxine EP Impurity F |
 | C4X-16788 | 2055-97-2 | Impurity | |
| Levothyroxine EP Impurity H |
 | C4X-16789 | 2016-06-0 | Impurity | |
| Levothyroxine EP Impurity I |
 | C4X-16791 | 87-62-7 | Impurity | |
| Lidocaine EP Impurity A |
 | C4X-167910 | 1012864-23-1 | Impurity | |
| Lidocaine EP Impurity J HCl |
 | C4X-167911 | 50295-20-0 | Impurity | |
| Lidocaine EP Impurity K Hydrochloride |
 | C4X-167912 | 35891-84-0 | Impurity | |
| Lidocaine Impurity 12 |
| C4X-167913 | 79-04-9 | Impurity | |
| Lidocaine Impurity 13 |
