1-Ethyl-4-fluoro-3-methyl-1H-pyrazole-5-carboxylic acid CAS 2243003-72-5

Purity 97%+In StockPharmaceutical Standards
CAS No.2243003-72-5
Molecular FormulaC7H9FN2O2
Molecular Weight172.16 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-Ethyl-4-fluoro-3-methyl-1H-pyrazole-5-carboxylic acid CAS 2243003-72-5 chemical structure

Description

The occurrence of 1-Ethyl-4-fluoro-3-methyl-1H-pyrazole-5-carboxylic acid is closely related to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 1-Ethyl-4-fluoro-3-methyl-1H-pyrazole-5-carboxylic acid (CAS 2243003-72-5), a certified reference material (molecular formula C7H9FN2O2, MW 172.16 g/mol) for analytical method development and quality control.

1-Ethyl-4-fluoro-3-methyl-1H-pyrazole-5-carboxylic acid (C7H9FN2O2) 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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.

CATO manufactures 1-Ethyl-4-fluoro-3-methyl-1H-pyrazole-5-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC7H9FN2O2
Molecular Weight172.16 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor)
Purity97%+
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.)1998
Halogen ContentF-containing
Nitrogen Atoms2

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