5,7-dimethyl-1H,2H,4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidin-2-one CAS 1258640-91-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1258640-91-3 |
| Molecular Formula | C8H13N3O |
| Molecular Weight | 167.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,7-dimethyl-1H,2H,4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidin-2-one (CAS 1258640-91-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C8H13N3O. Molecular weight: 167.21 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C8H13N3O |
| Molecular Weight | 167.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
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- n-[1-(3,5-dimethyl-1h-pyrazol-1-yl)propan-2-ylidene]hydroxylamine (CAS 1173323-92-6)
- 3-(2,5-Dimethyl-1h-pyrrol-1-yl)propanoic acid (CAS 134796-54-6)
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- 6,6-Dimethyl-6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-2-amine (CAS 1433855-11-8)
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Recommended Standards
- methyl 2-ethynylpyridine-4-carboxylate (CAS 1256810-92-0)
- n-Cyclopentyl-3-methyl-1,2,4-oxadiazol-5-amine (CAS 1259064-36-2)
- 6-(2-methylpropoxy)pyridin-3-ol (CAS 1256786-97-6)
- Ethyl 6-methyl-2-(3-morpholinopropanamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 315676-80-3)
- Δ9-Tetrahydrocannabinoic Acid B (CAS 23978-84-9)
- 5-Bromoisothiazolo[3,4-b]pyridin-3-amine (CAS 1823368-22-4)
- (S)-N1-((1-Benzylpyrrolidin-2-yl)methyl)-N1-ethylethane-1,2-diamine (CAS 1354018-24-8)
- (S)-(3-bromo-5-(trifluoromethyl)phenyl)(cyclopropyl)methanamine (CAS 1213843-98-1)
- 4-Fluoro-2-(1-phenyl-1H-pyrazol-5-yl)phenol (CAS 288401-63-8)
- Semaglutide Impurity 122 (CAS CATO-C4X-2226122)
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