3-[5-chloro-1-(4-fluorophenyl)-3-methyl-1H-pyrazol-4-yl]acrylic acid CAS 882140-27-4

Purity 97%+In StockPharmaceutical Standards
CAS No.882140-27-4
Molecular FormulaC13H10ClFN2O2
Molecular Weight280.68 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-[5-chloro-1-(4-fluorophenyl)-3-methyl-1H-pyrazol-4-yl]acrylic acid CAS 882140-27-4 chemical structure

Description

The occurrence of 3-[5-chloro-1-(4-fluorophenyl)-3-methyl-1H-pyrazol-4-yl]acrylic acid is closely related to a nitrogen-containing heterocyclic scaffold, 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.

3-[5-chloro-1-(4-fluorophenyl)-3-methyl-1H-pyrazol-4-yl]acrylic acid (CAS 882140-27-4), molecular formula C13H10ClFN2O2 and molecular weight 280.68 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C13H10ClFN2O2, 3-[5-chloro-1-(4-fluorophenyl)-3-methyl-1H-pyrazol-4-yl]acrylic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 280.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

As a certified reference material (CRM), 3-[5-chloro-1-(4-fluorophenyl)-3-methyl-1H-pyrazol-4-yl]acrylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC13H10ClFN2O2
Molecular Weight280.68 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
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)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Halogen ContentF/Cl-containing
Nitrogen Atoms2

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