3-Methyl-1-(m-tolyl)-1H-pyrazol-5(4H)-one CAS 20124-80-5

Purity 97%+In StockPharmaceutical Standards
CAS No.20124-80-5
Molecular FormulaC11H12N2O
Molecular Weight188.23 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Methyl-1-(m-tolyl)-1H-pyrazol-5(4H)-one CAS 20124-80-5 chemical structure

Description

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 3-Methyl-1-(m-tolyl)-1H-pyrazol-5(4H)-one is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 188.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).

CATO supplies 3-Methyl-1-(m-tolyl)-1H-pyrazol-5(4H)-one (CAS 20124-80-5), a certified reference material (molecular formula C11H12N2O, MW 188.23 g/mol) for analytical method development and quality control.

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

CATO manufactures 3-Methyl-1-(m-tolyl)-1H-pyrazol-5(4H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC11H12N2O
Molecular Weight188.23 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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962
Nitrogen Atoms2

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