| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-198510 | N/A | Impurity | |
| Regadenoson Impurity 10 | ||||
| C4X-198511 | 24723-77-1 | Impurity | |
| Regadenoson Impurity 11 | ||||
| C4X-19852 | N/A | Impurity | |
| Regadenoson Impurity 2 | ||||
 | C4X-198521 | 146-77-0 | Impurity | |
| Regadenoson Impurity 21 | ||||
 | C4X-198522 | 2004-07-1 | Impurity | |
| Regadenoson Impurity 22 | ||||
 | C4X-19853 | 1423073-21-5 | Impurity | |
| Regadenoson Impurity 3 | ||||
 | C4X-198530 | 765299-55-6 | Impurity | |
| Regadenoson Impurity 30 | ||||
 | C4X-198533 | 13276-52-3 | Impurity | |
| Regadenoson Impurity 33 | ||||
| C4X-19854 | N/A | Impurity | |
| Regadenoson Impurity 4 | ||||
| C4X-198543 | N/A | Impurity | |
| Regadenoson Impurity 43 | ||||
