Methyl 5-(3-(ethoxycarbonyl)-1-(p-tolyl)-1H-pyrazol-4-yl)-3-phenylisoxazole-4-carboxylate CAS 321571-35-1

Purity 97%+In StockPharmaceutical Standards
CAS No.321571-35-1
Molecular FormulaC24H21N3O5
Molecular Weight431.44 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Methyl 5-(3-(ethoxycarbonyl)-1-(p-tolyl)-1H-pyrazol-4-yl)-3-phenylisoxazole-4-carboxylate CAS 321571-35-1 chemical structure

Description

The occurrence of Methyl 5-(3-(ethoxycarbonyl)-1-(p-tolyl)-1H-pyrazol-4-yl)-3-phenylisoxazole-4-carboxylate is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Methyl 5-(3-(ethoxycarbonyl)-1-(p-tolyl)-1H-pyrazol-4-yl)-3-phenylisoxazole-4-carboxylate (CAS 321571-35-1), a certified reference material (molecular formula C24H21N3O5, MW 431.44 g/mol) for analytical method development and quality control.

Structurally, Methyl 5-(3-(ethoxycarbonyl)-1-(p-tolyl)-1H-pyrazol-4-yl)-3-phenylisoxazole-4-carboxylate (C24H21N3O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 431.44 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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 FormulaC24H21N3O5
Molecular Weight431.44 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)16.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms3

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