 | C4X-105236 | N/A | Impurity | |
| "(R)-(((2R,3S,4R,5R)-D-Sofosbuvir Isomer" |
 | C4X-105237 | N/A | Impurity | |
| "(S)-(((2R,3S,4R,5S)-L-Sofosbuvir Isomer" |
 | C4X-105239 | 1496551-91-7 | Impurity | |
| Sofosbuvir Impurity 39 |
 | C4X-10524 | 874638-94-5 | Impurity | |
| Sofosbuvir Impurity 4 |
 | C4X-105241 | N/A | Impurity | |
| "(2R,3R,4S,5S)-D-Sofosbuvir Isomer" |
 | C4X-105242 | N/A | Impurity | |
| Sofosbuvir Impurity 42 |
 | C4X-105243 | N/A | Impurity | |
| Sofosbuvir Impurity 43 |
 | C4X-105244 | N/A | Impurity | |
| "(R)-(((2S,3S,4S,5S)-D-Sofosbuvir Isomer" |
 | C4X-105245 | 1496552-51-2 | Impurity | |
| Sofosbuvir Ph.Int Impurity B(Chloro Sofosbuvir) |
 | C4X-105246 | 874638-80-9 | Impurity | |
| Sofosbuvir Impurity 46 |