2-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-5,5'-dimethyl-2'-phenyl-1',2'-dihydro-2H,3'H-[3,4'-bipyrazol]-3'-one CAS 318951-76-7

Purity 97%+In StockPharmaceutical Standards
CAS No.318951-76-7
Molecular FormulaC20H15ClF3N5O
Molecular Weight433.81 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-5,5'-dimethyl-2'-phenyl-1',2'-dihydro-2H,3'H-[3,4'-bipyrazol]-3'-one CAS 318951-76-7 chemical structure

Description

The occurrence of 2-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-5,5'-dimethyl-2'-phenyl-1',2'-dihydro-2H,3'H-[3,4'-bipyrazol]-3'-one is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 2-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-5,5'-dimethyl-2'-phenyl-1',2'-dihydro-2H,3'H-[3,4'-bipyrazol]-3'-one (CAS 318951-76-7), a certified reference material (molecular formula C20H15ClF3N5O, MW 433.81 g/mol) for analytical method development and quality control.

The molecular framework of 2-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-5,5'-dimethyl-2'-phenyl-1',2'-dihydro-2H,3'H-[3,4'-bipyrazol]-3'-one (C20H15ClF3N5O) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

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 FormulaC20H15ClF3N5O
Molecular Weight433.81 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at room temperature, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)14.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentF/Cl-containing
Nitrogen Atoms5

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