1-(5-Methyl-2-phenyl-2H-pyrazol-3-yl)-3-phenyl-urea CAS 337975-77-6

Purity 97%+In StockPharmaceutical Standards
CAS No.337975-77-6
Molecular FormulaC17H16N4O
Molecular Weight292.34 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-(5-Methyl-2-phenyl-2H-pyrazol-3-yl)-3-phenyl-urea CAS 337975-77-6 chemical structure

Description

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

1-(5-Methyl-2-phenyl-2H-pyrazol-3-yl)-3-phenyl-urea (CAS 337975-77-6), molecular formula C17H16N4O and molecular weight 292.34 g/mol, is a CATO reference standard with documented purity and traceability.

1-(5-Methyl-2-phenyl-2H-pyrazol-3-yl)-3-phenyl-urea (C17H16N4O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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 FormulaC17H16N4O
Molecular Weight292.34 g/mol
AppearancePale yellow to yellow crystalline powder
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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms4

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