Description

1H-Pyrazole-1-Carbonyl Chloride, 4-Ethyl-3,5-Dimethyl- (9Ci) is a specialized heterocyclic acid chloride derivative, serving as a critical building block in advanced organic synthesis. Its 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 building block for 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, herbicides, and fungicides, where the pyrazole core contributes to biological activity.
• Ligand and Catalyst Development: Serves as a precursor for creating specialized ligands used in transition metal catalysis and organometallic chemistry.
• Material Science Research: Employed in the synthesis of functional polymers and organic electronic materials with specific optoelectronic 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.
• Bioconjugation Chemistry: Potential use in modifying biomolecules (e.g., peptides, proteins) for diagnostic or therapeutic applications due to its reactive carbonyl chloride group.

Basic Information

Product Name	1H-Pyrazole-1-Carbonyl Chloride, 4-Ethyl-3,5-Dimethyl- (9Ci)
CAS No.	67514-67-4
Molecular Formula	C8H11ClN2O
Molecular Weight	186.64 g/mol
Synonyms	4-Ethyl-3,5-dimethyl-1H-pyrazole-1-carbonyl chloride; 4-Ethyl-3,5-dimethylpyrazole-1-carbonyl chloride; 1-Carbonylchloride-4-ethyl-3,5-dimethylpyrazole; 4-Ethyl-3,5-dimethyl-1-pyrazolecarbonyl chloride; Pyrazole-1-carbonyl chloride, 4-ethyl-3,5-dimethyl-; 67514-67-4 (CAS)
EINECS	Contact for details

Quality Control

Our production of 1H-Pyrazole-1-Carbonyl Chloride, 4-Ethyl-3,5-Dimethyl- adheres to stringent quality management protocols to ensure batch-to-batch consistency and reliability for your critical syntheses. Each lot is characterized using advanced analytical techniques including NMR, HPLC, and GC to confirm identity, purity, and the absence of critical impurities. Certificates of Analysis (COA) detailing all relevant specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry place. Recommended storage temperature is 2-8°C for long-term stability. Keep away from strong acids and incompatible materials such as bases, alcohols, and amines.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
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.