3,5-dichloro-1-methyl-1H-pyrazole-4-carboxylic acid CAS 134589-53-0

Purity 97%+In StockPharmaceutical Standards
CAS No.134589-53-0
Molecular FormulaC5H4Cl2N2O2
Molecular Weight195.00 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3,5-dichloro-1-methyl-1H-pyrazole-4-carboxylic acid CAS 134589-53-0 chemical structure

Description

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

CATO supplies 3,5-dichloro-1-methyl-1H-pyrazole-4-carboxylic acid (CAS 134589-53-0), a certified reference material (molecular formula C5H4Cl2N2O2, MW 195.00 g/mol) for analytical method development and quality control.

3,5-dichloro-1-methyl-1H-pyrazole-4-carboxylic acid (C5H4Cl2N2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. 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).

CATO manufactures 3,5-dichloro-1-methyl-1H-pyrazole-4-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 FormulaC5H4Cl2N2O2
Molecular Weight195.00 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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)4.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1995
Halogen ContentCl-containing
Nitrogen Atoms2

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