4-(2-Ethylbutylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one CAS 834898-75-8

Purity 97%+In StockPharmaceutical Standards
CAS No.834898-75-8
Molecular FormulaC16H20N2O
Molecular Weight256.34 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-(2-Ethylbutylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one CAS 834898-75-8 chemical structure

Description

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.

CATO supplies 4-(2-Ethylbutylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one (CAS 834898-75-8), a certified reference material (molecular formula C16H20N2O, MW 256.34 g/mol) for analytical method development and quality control.

Structurally, 4-(2-Ethylbutylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one (C16H20N2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 256.34 g/mol, it falls into the medium-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).

CATO manufactures 4-(2-Ethylbutylidene)-3-methyl-1-phenyl-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 FormulaC16H20N2O
Molecular Weight256.34 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)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1986
Nitrogen Atoms2

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