5-methyl-2-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one CAS 65774-92-7
| CAS No. | 65774-92-7 |
| Molecular Formula | C13H11N3O |
| Molecular Weight | 225.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-methyl-2-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 65774-92-7) is a high-purity analytical reference standard with the molecular formula C13H11N3O and a molecular weight of 225.25 g/mol.
5-methyl-2-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one (C13H11N3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 5-methyl-2-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H11N3O |
| Molecular Weight | 225.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 3 |
Related methyl Standards
- 2-Methyl-5-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 107625-17-2)
- 2-Methyl-7-phenylpyrazolo[1,5-a]pyrimidin-5-ol (CAS 309949-80-2)
- 5-Methyl-2-phenylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 90019-55-9)
- 5-Methyl-3-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 77493-78-8)
- 7-Methyl-5-phenylpyrazolo[1,5-a]pyrimidin-2-ol (CAS 91902-03-3)
- 3-Phenylpyrazolo[1,5-a]pyrimidine-2,7(1H,4H)-dione (CAS 1334487-59-0)
- 2-Phenylpyrazolo[1,5-a]pyrimidine-5,7-diol (CAS 64947-24-6)
- 3-Phenylpyrazolo[1,5-a]pyrimidine-5,7-diol (CAS 99898-63-2)
Recommended Standards
- 5-Methyl-2-phenyl-[1,3]oxazolo[5,4-b]pyridin-6-amine (CAS 2034156-85-7)
- 5-Methoxy-2-(pyridin-4-yl)-1H-benzo[d]imidazole (CAS 84123-78-4)
- 5-Methyl-3-phenyl-4-(1H-pyrazol-5-yl)isoxazole (CAS 265125-69-7)
- 5-Hydroxymethyl-n-phenyl-2-1h-pyridone, methyl ether (CAS 914918-69-7)
- 1-(5-Bromo-2-methylphenyl)propan-1-amine (CAS 1270440-07-7)
- (S)-2-((1-Benzylpyrrolidin-3-yl)amino)-N-hydroxyacetamide (CAS 919996-36-4)
- 6-(1H-Benzo[d]imidazol-2-yl)-[1,2,4]triazolo[1,5-a]pyrimidin-7-amine (CAS 392665-67-7)
- {2-[(2,4-dichlorophenyl)sulfanyl]pyridin-3-yl}methyl N-(2-methylphenyl)carbamate (CAS 339278-54-5)
- (4-Chlorophenyl)(4-(methylthio)phenyl)methanone (CAS 72585-17-2)
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Why CATO?
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