Description

1H-Pyrazole-1-Carbonyl Chloride, 3-Ethyl-4-Methyl- (9Ci) is a specialized heterocyclic acid chloride derivative, serving as a critical building block in advanced organic synthesis. Its core value lies in its high reactivity as an acylating agent, enabling the efficient introduction of the pyrazole-carbonyl moiety into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for developing novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, especially those targeting central nervous system (CNS) disorders and metabolic diseases.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where the pyrazole scaffold contributes to biological activity.
• Ligand and Catalyst Development: Serves as a starting material for creating specialized ligands used in homogeneous catalysis and metal-organic frameworks (MOFs).
• Material Science Research: Employed in the development of functional polymers and advanced organic materials with specific electronic or photonic properties.
• Custom Synthesis and Contract Manufacturing: A vital reagent for custom synthesis houses and CDMOs (Contract Development and Manufacturing Organizations) serving the life sciences sector.
• Academic and R&D Laboratories: Fundamental building block for methodological research in synthetic organic chemistry and medicinal chemistry programs.

Basic Information

Product Name	1H-Pyrazole-1-Carbonyl Chloride, 3-Ethyl-4-Methyl- (9Ci)
CAS No.	67514-66-3
Molecular Formula	C7H9ClN2O
Molecular Weight	172.61 g/mol
Synonyms	3-Ethyl-4-methyl-1H-pyrazole-1-carbonyl chloride; 3-Ethyl-4-methylpyrazole-1-carbonyl chloride; 1-Carbonylchloride-3-ethyl-4-methylpyrazole; 3-Ethyl-4-methyl-1-pyrazolecarbonyl chloride; (3-Ethyl-4-methyl-1H-pyrazol-1-yl)carbonyl chloride; 1H-Pyrazole-1-carbonyl chloride, 3-ethyl-4-methyl-; Pyrazole-1-carbonyl chloride, 3-ethyl-4-methyl-
EINECS	Contact for details

Quality Control

Our 1H-Pyrazole-1-Carbonyl Chloride, 3-Ethyl-4-Methyl- (9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by NMR and IR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) documenting all critical quality attributes are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Area %)
Water Content (KF)	≤ 0.5%

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