3-(Difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic Acid CAS 176969-34-9

Purity ≥95%In StockPharmaceutical Standards
CAS No.176969-34-9
Molecular FormulaC6H6F2N2O2
Molecular Weight176.12 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-(Difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic Acid CAS 176969-34-9 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-(Difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic Acid.

3-(Difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic Acid (CAS 176969-34-9) is a high-purity analytical reference standard with the molecular formula C6H6F2N2O2 and a molecular weight of 176.12 g/mol.

3-(Difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic Acid (C6H6F2N2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; 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).

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 FormulaC6H6F2N2O2
Molecular Weight176.12 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility)
Purity≥95%
StorageStore at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation
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)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2007
Halogen ContentF-containing
Nitrogen Atoms2

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