Description

1-Ethyl-1H-Pyrazole-4-Carbonyl Chloride is a versatile and highly reactive organic intermediate, essential for constructing complex molecular architectures. Its core value lies in its acyl chloride functionality, which enables efficient amide bond formation and other nucleophilic substitution reactions under mild conditions. This compound is primarily needed by research chemists and process development scientists in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key building block for the synthesis of drug candidates, particularly those containing pyrazole heterocycles with potential biological activity.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides that require the pyrazole moiety.
• Material Science Precursor: Serves as a monomer or functionalization agent in the development of specialty polymers and advanced organic materials.
• Ligand and Catalyst Development: Employed to create novel pyrazole-based ligands for metal complexes used in catalysis.
• Chemical Biology Probes: Facilitates the labeling or modification of biomolecules for research and diagnostic applications.
• Custom Synthesis and Contract Manufacturing: A critical reagent for fine chemical manufacturers offering bespoke synthesis services.

Basic Information

Product Name	1-Ethyl-1H-Pyrazole-4-Carbonyl Chloride
CAS No.	905307-18-8
Molecular Formula	C6H7ClN2O
Molecular Weight	158.59 g/mol
Synonyms	1-Ethyl-1H-pyrazole-4-carbonyl chloride; 1-Ethyl-4-pyrazolecarbonyl chloride; 4-(Chlorocarbonyl)-1-ethyl-1H-pyrazole; 1-Ethylpyrazole-4-carboxylic acid chloride; 1-Ethyl-1H-pyrazole-4-carboxylic acid chloride; 1-Ethyl-4-carboxypyrazole chloride; 905307-18-8
EINECS	Contact for details

Quality Control

Our 1-Ethyl-1H-Pyrazole-4-Carbonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for research and process chemistry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and reliability for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at 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 to prevent decomposition. Keep away from heat, open flames, and incompatible materials such as strong bases, alcohols, and amines.

Specification

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

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