5-Chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carbonyl chloride CAS 128564-57-8

Purity 97%+In StockPharmaceutical Standards
CAS No.128564-57-8
Molecular FormulaC6H3Cl2F3N2O
Molecular Weight247.00 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carbonyl chloride CAS 128564-57-8 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 5-Chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carbonyl chloride.

5-Chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carbonyl chloride (CAS 128564-57-8) is a high-purity analytical reference standard with the molecular formula C6H3Cl2F3N2O and a molecular weight of 247.00 g/mol.

Based on its molecular formula C6H3Cl2F3N2O, 5-Chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carbonyl chloride contains an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 247.00 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.

CATO manufactures 5-Chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carbonyl chloride 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 FormulaC6H3Cl2F3N2O
Molecular Weight247.00 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 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
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1993
Halogen ContentF/Cl-containing
Nitrogen Atoms2

Related Chloro Standards

Recommended Standards

Why CATO?