3-Methylpyrazolo[1,5-a]pyrimidin-7-ol CAS 136178-55-7

Purity 97%+In StockPharmaceutical Standards
CAS No.136178-55-7
Molecular FormulaC7H7N3O
Molecular Weight149.15 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Methylpyrazolo[1,5-a]pyrimidin-7-ol CAS 136178-55-7 chemical structure

Description

The molecular framework of 3-Methylpyrazolo[1,5-a]pyrimidin-7-ol (C7H7N3O) is characterized by an amide group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).

3-Methylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 136178-55-7) is a high-purity analytical reference standard with the molecular formula C7H7N3O and a molecular weight of 149.15 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.

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 FormulaC7H7N3O
Molecular Weight149.15 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)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1995
Nitrogen Atoms3

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