3,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one CAS 244127-32-0
| CAS No. | 244127-32-0 |
| Molecular Formula | C8H9N3O |
| Molecular Weight | 163.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C8H9N3O, 3,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 163.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
3,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 244127-32-0), molecular formula C8H9N3O and molecular weight 163.18 g/mol, is a CATO reference standard with documented purity and traceability.
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.
As a certified reference material (CRM), 3,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H9N3O |
| Molecular Weight | 163.18 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Related Dimethylpyrazolo Standards
- 5,6-Dimethylpyrazolo[1,5-a]pyrimidin-2(1H)-one (CAS 101259-15-8)
- 2,3-Dimethylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 1246553-45-6)
- 2,3-Dimethylpyrazolo[1,5-a]pyrimidin-7(1H)-one (CAS 1822715-83-2)
- 1,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(1H)-one (CAS 35149-49-6)
- 2,3-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 5148-32-3)
- 2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 98488-10-9)
- 2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 27166-46-7)
- 3,5-Dimethylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 2090978-79-1)
Recommended Standards
- 3,5-Dimethyl-1H-pyrazolo[4,3-b]pyridin-7-ol (CAS 35592-56-4)
- 3,4-Dimethyl-2,7-dihydro-6H-pyrazolo[3,4-b]pyridin-6-one (CAS 63928-61-0)
- 3,6-Dimethylimidazo[1,2-c]pyrimidin-5(6H)-one (CAS 57491-48-2)
- 3,4-diamino-5-methoxybenzonitrile (CAS 861258-97-1)
- 2-(Benzofuran-2-yl)-2-(4-(4-fluorophenyl)piperazin-1-yl)acetic acid (CAS 885276-82-4)
- 1-(2-(Trifluoromethyl)phenyl)ethane-1-sulfonamide (CAS 1250069-96-5)
- 2-Chloro-1-morpholino-2-phenylethan-1-one (CAS 18504-71-7)
- 6-Chloro-7-methylimidazo[1,2-a]pyridine-8-carbonitrile (CAS 2167840-38-0)
- 3-(1H-Benzo[d]imidazol-2-yl)-N-methoxy-N-methylpropanamide (CAS 1270852-60-2)
- 3-(2-Amino-6-oxo-4-phenyl-1,6-dihydropyrimidin-5-yl)propanoic acid (CAS 789-43-5)
- (R)-2-Methylazetidine Hydrochloride (CAS 791614-71-6)
- N-(3-Methoxyphenyl)-4-oxo-4H-chromene-2-carboxamide (CAS 306287-57-0)
- (S)-3-amino-3-(3-hydroxyphenyl)propanoic acid hydrochloride (CAS 490034-68-9)
- Semaglutide impurity 32 (CAS CATO-C4X-222632)
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