| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-198528 | 3868-34-6 | Impurity | |
| Regadenoson Impurity 28 | ||||
| C4X-198529 | 2222137-24-6 | Impurity | |
| Regadenoson Impurity 29 | ||||
 | C4X-19853 | 1423073-21-5 | Impurity | |
| Regadenoson Impurity 3 | ||||
 | C4X-198530 | 765299-55-6 | Impurity | |
| Regadenoson Impurity 30 | ||||
| C4X-198531 | N/A | Impurity | |
| Regadenoson Impurity 31 | ||||
 | C4X-198533 | 13276-52-3 | Impurity | |
| Regadenoson Impurity 33 | ||||
| C4X-198534 | 13406-50-3 | Impurity | |
| Regadenoson Impurity 34 | ||||
| C4X-198535 | N/A | Impurity | |
| Regadenoson Impurity 35 | ||||
| C4X-198536 | 871301-32-5 | Impurity | |
| Regadenoson Impurity 36 | ||||
| C4X-198537 | 50427-65-1 | Impurity | |
| Regadenoson Impurity 37 | ||||
