Description

3-Methyl-1-Phenyl-1H-Pyrazole-4-Carbonyl Chloride is a high-purity, reactive organic intermediate essential for advanced chemical synthesis. This compound matters as a key building block for constructing complex heterocyclic molecules, enabling the development of novel active ingredients. It is primarily needed by research institutions and manufacturers in the pharmaceutical and agrochemical industries for the development of new drugs and crop protection agents. Its reactive acid chloride group facilitates efficient coupling reactions to form amides and esters.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds with pyrazole-based scaffolds.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and insecticides, leveraging its heterocyclic structure.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers and advanced organic materials.
• Chemical Research & Development: Employed in academic and industrial R&D labs for exploring new synthetic pathways and creating compound libraries for screening.
• Dye and Pigment Intermediate: Acts as a building block for synthesizing complex organic dyes and functional pigments.

Basic Information

Product Name	3-Methyl-1-Phenyl-1H-Pyrazole-4-Carbonyl Chloride
CAS No.	957294-52-9
Molecular Formula	C11H9ClN2O
Molecular Weight	220.66 g/mol
Synonyms	1H-Pyrazole-4-carbonyl chloride, 3-methyl-1-phenyl-; 3-Methyl-1-phenylpyrazole-4-carbonyl chloride; 4-(Chlorocarbonyl)-3-methyl-1-phenyl-1H-pyrazole; 3-Methyl-1-phenyl-1H-pyrazole-4-carboxylic acid chloride; 1-Phenyl-3-methyl-4-pyrazolecarbonyl chloride; 4-Carboxy-3-methyl-1-phenylpyrazole chloride; 957294-52-9
EINECS	Contact for details

Quality Control

Our 3-Methyl-1-Phenyl-1H-Pyrazole-4-Carbonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, 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, well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Assay	97.0% - 102.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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