(4Z)-1-(4-Chlorophenyl)-4-{[(3,4-dimethylphenyl)amino]methylidene}-3-ethoxy-4,5-dihydro-1H-pyrazol-5-one CAS 338751-05-6

Purity 97%+In StockPharmaceutical Standards
CAS No.338751-05-6
Molecular FormulaC20H20ClN3O2
Molecular Weight369.84 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(4Z)-1-(4-Chlorophenyl)-4-{[(3,4-dimethylphenyl)amino]methylidene}-3-ethoxy-4,5-dihydro-1H-pyrazol-5-one CAS 338751-05-6 chemical structure

Description

CATO supplies (4Z)-1-(4-Chlorophenyl)-4-{[(3,4-dimethylphenyl)amino]methylidene}-3-ethoxy-4,5-dihydro-1H-pyrazol-5-one (CAS 338751-05-6), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C20H20ClN3O2. Molecular weight: 369.84 g/mol. Batch-specific COA and technical support are available on request.

Physical & Chemical Properties

Molecular FormulaC20H20ClN3O2
Molecular Weight369.84 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
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; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentCl-containing
Nitrogen Atoms3

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