Description

1-(4-Chloro-Phenyl)-5-Methyl-1H-Pyrazole-3-Carboxylic Acid is a high-purity pyrazole carboxylic acid derivative that serves as a critical building block in advanced organic synthesis. This compound matters for its role as a versatile intermediate in the development of active pharmaceutical ingredients (APIs) and agrochemicals, enabling precise molecular construction. It is primarily needed by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for creating novel compounds with targeted biological activity.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring pyrazole-based scaffolds.
• Agrochemical Synthesis: Serves as a core building block for developing advanced herbicides, fungicides, and insecticides with improved efficacy and selectivity.
• Chemical Research & Development: Used in academic and industrial R&D laboratories for exploring new chemical entities and reaction pathways in heterocyclic chemistry.
• Material Science: Potential intermediate for synthesizing specialty polymers, ligands for catalysis, or organic electronic materials.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for the production of client-specific target molecules.

Basic Information

Product Name	1-(4-Chloro-Phenyl)-5-Methyl-1H-Pyrazole-3-Carboxylic Acid
CAS No.	126129-22-4
Molecular Formula	C11H9ClN2O2
Molecular Weight	236.66 g/mol
Synonyms	1-(4-Chlorophenyl)-5-methyl-1H-pyrazole-3-carboxylic acid; 5-Methyl-1-(4-chlorophenyl)-1H-pyrazole-3-carboxylic acid; 1H-Pyrazole-3-carboxylic acid, 1-(4-chlorophenyl)-5-methyl-; 126129-22-4; 4-Chloro-1-(5-methyl-1H-pyrazol-3-yl)benzoic acid (alternative tautomer name); 1-(p-Chlorophenyl)-5-methylpyrazole-3-carboxylic acid
EINECS	Contact for details

Quality Control

Our 1-(4-Chloro-Phenyl)-5-Methyl-1H-Pyrazole-3-Carboxylic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR, to ensure it meets exacting standards for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from strong oxidizing agents, strong bases, and sources of ignition. For long-term storage, consider an inert atmosphere to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.