6-Benzyl-2,5-dimethyl-3-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one CAS 439128-53-7

Purity 97%+In StockPharmaceutical Standards
CAS No.439128-53-7
Molecular FormulaC21H19N3O
Molecular Weight329.40 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

6-Benzyl-2,5-dimethyl-3-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one CAS 439128-53-7 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 329.40 g/mol gives 6-Benzyl-2,5-dimethyl-3-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

6-Benzyl-2,5-dimethyl-3-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 439128-53-7) is a high-purity analytical reference standard with the molecular formula C21H19N3O and a molecular weight of 329.40 g/mol.

Structurally, 6-Benzyl-2,5-dimethyl-3-phenylpyrazolo[1,5-a]pyrimidin-7(4H)-one (C21H19N3O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 329.40 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC21H19N3O
Molecular Weight329.40 g/mol
AppearancePale yellow to yellow crystalline powder
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)14.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms3

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