Description

3-Isoxazolecarbonyl Chloride is a highly reactive acid chloride derivative of isoxazole, serving as a critical building block in organic synthesis. Its value lies in its ability to efficiently introduce the isoxazolecarbonyl moiety, a privileged heterocyclic scaffold, into target molecules under mild conditions. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs) containing the isoxazole heterocycle, which is known for its diverse biological activities.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides where the isoxazole ring contributes to efficacy and selectivity.
• Peptide Mimetics & Bioconjugation: Employed to create isoxazole-based peptide analogs or as a coupling agent for labeling biomolecules.
• Material Science: Acts as a monomer or cross-linking agent for polymers with specialized thermal or optical properties.
• Ligand & Catalyst Development: Serves as a starting material for synthesizing novel ligands used in catalysis and metal-organic frameworks (MOFs).
• Custom Synthesis & R&D: A versatile reagent for academic and industrial research in medicinal chemistry and chemical biology.

Basic Information

Item	Detail
Product Name	3-Isoxazolecarbonyl Chloride
CAS No.	53064-54-3
Molecular Formula	C4H2ClNO2
Molecular Weight	131.52 g/mol
Synonyms	Isoxazole-3-carbonyl chloride; 3-Carboxyisoxazole chloride; 1,2-Oxazole-3-carbonyl chloride; Isoxazol-3-ylcarbonyl chloride; 3-Isoxazolecarboxylic acid chloride; 3-Isoxazoyl chloride
EINECS	Contact for details

Quality Control

Our 3-Isoxazolecarbonyl Chloride is produced under strict quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets the high standards required for advanced synthetic applications. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at 2-8°C under an inert atmosphere (e.g., nitrogen or argon). Due to its moisture-sensitive and highly volatile nature, allow the container to reach room temperature before opening to minimize moisture ingress and loss of product.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
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.