5-Benzyl-6-methyl-2-(5-oxo-3-phenyl-2,5-dihydro-1H-pyrazol-1-yl)-3,4-dihydropyrimidin-4-one CAS 866019-73-0
| CAS No. | 866019-73-0 |
| Molecular Formula | C21H18N4O2 |
| Molecular Weight | 358.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 5-Benzyl-6-methyl-2-(5-oxo-3-phenyl-2,5-dihydro-1H-pyrazol-1-yl)-3,4-dihydropyrimidin-4-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 358.39 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
5-Benzyl-6-methyl-2-(5-oxo-3-phenyl-2,5-dihydro-1H-pyrazol-1-yl)-3,4-dihydropyrimidin-4-one (CAS 866019-73-0), molecular formula C21H18N4O2 and molecular weight 358.39 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C21H18N4O2 |
| Molecular Weight | 358.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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 |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
Recommended Standards
- 5-[[(2R)-2-aminopropyl]-ethyl-amino]-2-(2,6-dioxo-3-piperidyl)isoindoline-1,3-dione (CAS 2728780-05-8)
- 6,7-Bis(benzyloxy)-2H-chromen-2-one (CAS 909-84-2)
- 5-[(4-amino-1-methyl-butyl)amino]-2-(2,6-dioxo-3-piperidyl)isoindoline-1,3-dione (CAS 2703768-35-6)
- 6-[2-(2,6-dioxo-3-piperidyl)-1-oxo-isoindolin-4-yl]hexanoic acid (CAS 2379870-48-9)
- N-(2-(1H-Pyrazol-4-yl)-1H-indol-4-yl)benzamide (CAS 827318-32-1)
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- Acetyl tetrapeptide-3 (CAS 827306-88-7)
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