| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-1009121 | N/A | Impurity | |
| Apremilast Impurity 121 | ||||
| C4X-1009122 | N/A | Impurity | |
| Apremilast Impurity 122 | ||||
| C4X-1009123 | N/A | Impurity | |
| Apremilast Impurity 123 | ||||
| C4X-1009124 | 2741194-01-2 | Impurity | |
| Apremilast Impurity 124 | ||||
| C4X-100913 | N/A | Impurity | |
| Apremilast impurity 13 | ||||
 | C4X-100914 | 253168-94-4 | Impurity | |
| Apremilast impurity 14 | ||||
 | C4X-100915 | 1384441-38-6 | Impurity | |
| Apremilast impurity 15 | ||||
 | C4X-100916 | 1384439-80-8 | Impurity | |
| Apremilast impurity 16 | ||||
| C4X-100917 | N/A | Impurity | |
| Apremilast impurity 17 | ||||
 | C4X-100918 | 1384439-79-5 | Impurity | |
| Apremilast impurity 18 | ||||
