| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-198518 | 313348-27-5 | Impurity | |
| Regadenoson Impurity 18 | ||||
 | C4X-198519 | N/A | Impurity | |
| Regadenoson Impurity 19 | ||||
| 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-198523 | N/A | Impurity | |
| Regadenoson Impurity 23 | ||||
| C4X-198524 | 50447-10-4 | Impurity | |
| Regadenoson Impurity 24 | ||||
| C4X-198525 | 5404-92-2 | Impurity | |
| Regadenoson Impurity 25 | ||||
| C4X-198526 | 5404-87-5 | Impurity | |
| Regadenoson Impurity 26 | ||||
| C4X-198527 | 89365-25-3 | Impurity | |
| Regadenoson Impurity 27 | ||||
