 | C4X-13207 | 7077-05-6 | Impurity | |
| Nateglinide EP Impurity A |
 | C4X-13208 | 105746-47-2 | Impurity | |
| Nateglinide Impurity 8 |
 | C4X-13209 | 105816-04-4 | Impurity | |
| "(1s,4S)-D-Nateglinide" |
 | C4X-13211 | 100648-13-3 | Impurity | |
| Triclabendazole sulfoxide |
| C4X-13213 | 145770-88-3 | Impurity | |
| Triclabendazole Impurity 3 |
| C4X-13214 | 145770-89-4 | Impurity | |
| Triclabendazole Impurity 4 |
 | C4X-13215 | 106791-37-1 | Impurity | |
| Triclabendazole Impurity 5 |
 | C4X-13221 | 3516-95-8 | Impurity | |
| Propafenone EP Impurity A |
 | C4X-132210 | 86383-32-6 | Impurity | |
| Propafenone Impurity 10 |
| C4X-132215 | 27439-12-9 | Impurity | |
| Propafenone EP Impurity H |
