4-Butyl-5-hydroxy-2-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-3(2H)-one CAS 975-18-8

Purity 97%+In StockPharmaceutical Standards
CAS No.975-18-8
Molecular FormulaC19H20N2O3
Molecular Weight324.37 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Butyl-5-hydroxy-2-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-3(2H)-one CAS 975-18-8 chemical structure

Description

CATO supplies 4-Butyl-5-hydroxy-2-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-3(2H)-one (CAS 975-18-8), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C19H20N2O3. Molecular weight: 324.37 g/mol. Batch-specific COA and technical support are available on request.

Physical & Chemical Properties

Molecular FormulaC19H20N2O3
Molecular Weight324.37 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°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)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Nitrogen Atoms2

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