 | C4X-190226 | 2100-31-4 | Impurity | |
| Salicylic Acid Impurity 26 |
 | C4X-19025 | 26171-04-0 | Impurity | |
| Salicylic Acid Impurity 5 |
| C4X-19027 | N/A | Impurity | |
| Salicylic Acid Impurity 7 |
 | C4X-19031 | 2197414-57-4 | Impurity | |
| Lenalidomide Impurity 1 |
 | C4X-190312 | 59382-59-1 | Impurity | |
| Lenalidomide Impurity 12 |
 | C4X-190313 | 1975-50-4 | Impurity | |
| Lenalidomide Impurity 13 |
 | C4X-190314 | 18583-89-6 | Impurity | |
| Lenalidomide Impurity 14 |
| C4X-190315 | N/A | Impurity | |
| Lenalidomide Lactosamine Adduct |
 | C4X-190316 | 98475-07-1 | Impurity | |
| Lenalidomide Impurity 16 |
| C4X-190319 | N/A | Impurity | |
| Lenalidomide Impurity 19 |
