2,5-Dimethyl-3-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one CAS 138628-48-5

Purity 97%+In StockPharmaceutical Standards
CAS No.138628-48-5
Molecular FormulaC14H13N3O
Molecular Weight239.27 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2,5-Dimethyl-3-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one CAS 138628-48-5 chemical structure

Description

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.

Physical & Chemical Properties

Molecular FormulaC14H13N3O
Molecular Weight239.27 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1996
Nitrogen Atoms3

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