Regadenoson Impurity 48 CAS CATO-C4X-198548
| CAS No. | CATO-C4X-198548 |
| Molecular Formula | C20H20N8O8 |
| Molecular Weight | 500.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Regadenoson Impurity 48 (CAS CATO-C4X-198548) is a certified pharmaceutical impurity reference standard with the molecular formula C20H20N8O8 and a molecular weight of 500.42 g/mol.
Regadenoson Impurity 48 (C20H20N8O8) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C20H20N8O8 |
| Molecular Weight | 500.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 8 |
Related Regadenoson Standards
- Regadenoson Impurity 42 (CAS CATO-C4X-198542)
- Regadenoson Impurity 47 (CAS CATO-C4X-198547)
- Regadenoson Impurity 41 (CAS CATO-C4X-198541)
- Regadenoson Impurity 53 (CAS CATO-C4X-198553)
- Regadenoson Impurity 55 (CAS CATO-C4X-198555)
- Regadenoson Impurity 58 (CAS CATO-C4X-198558)
- Regadenoson Impurity 56 (CAS CATO-C4X-198556)
- Regadenoson Impurity N1 (CAS 16321-99-6)
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- Salbutamol Impurity 188 (CAS CATO-C4X-1176188)
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- 6-Chloro-2-(5-nitrothiophen-2-yl)-1H-imidazo[4,5-b]pyridine (CAS 662117-74-0)
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- CAS 170510-09-0 (CAS 170510-09-0)
- N'-Isonicotinoyl-6-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-sulfonohydrazide (CAS 220654-99-9)
- 1,2,3,4-Tetrahydro-6-methoxy-3-methylquinoline (CAS 184041-83-6)
- tert-Butyl 4-(2-(methylamino)-2-oxoethoxy)piperidine-1-carboxylate (CAS 1256483-64-3)
- Glucagon (1-29) (CAS 16941-32-5)
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