| CAS No. | 138628-48-5 |
| Molecular Formula | C14H13N3O |
| Molecular Weight | 239.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
2,5-Dimethyl-3-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one (C14H13N3O) 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.
2,5-Dimethyl-3-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 138628-48-5) is a high-purity analytical reference standard with the molecular formula C14H13N3O and a molecular weight of 239.27 g/mol.
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), 2,5-Dimethyl-3-phenylpyrazolo[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.
| Molecular Formula | C14H13N3O |
| Molecular Weight | 239.27 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.) | 1996 |
| Nitrogen Atoms | 3 |