| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-107239 | 390800-88-1 | Impurity | |
| Bortezomib Impurity 39 | ||||
 | C4X-10724 | 289472-81-7 | Impurity | |
| Bortezomib Impurity 4 | ||||
 | C4X-107240 | 87304-47-0 | Impurity | |
| Bortezomib Impurity 40 | ||||
 | C4X-107241 | 4664-57-7 | Impurity | |
| Bortezomib Impurity 41 | ||||
 | C4X-107242 | 89-01-0 | Impurity | |
| Bortezomib Impurity 42 | ||||
 | C4X-107243 | 513-36-0 | Impurity | |
| Bortezomib Impurity 43 | ||||
 | C4X-107244 | 78-77-3 | Impurity | |
| Bortezomib Impurity 44 | ||||
| C4X-107245 | 110755-29-8 | Impurity | |
| Bortezomib Impurity 45 | ||||
| C4X-107246 | N/A | Impurity | |
| Bortezomib Impurity 46 | ||||
| C4X-107247 | N/A | Impurity | |
| Bortezomib Impurity 47 | ||||
