5-Methyl-3H-pyrazol-3-one CAS 3206-39-1

Purity 97%+In StockPharmaceutical Standards
CAS No.3206-39-1
Molecular FormulaC4H4N2O
Molecular Weight96.09 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Methyl-3H-pyrazol-3-one CAS 3206-39-1 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-Methyl-3H-pyrazol-3-one.

5-Methyl-3H-pyrazol-3-one (CAS 3206-39-1), molecular formula C4H4N2O and molecular weight 96.09 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C4H4N2O, 5-Methyl-3H-pyrazol-3-one contains an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 96.09 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 FormulaC4H4N2O
Molecular Weight96.09 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)4.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1957
Nitrogen Atoms2

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Why CATO?