Description

5-Methylisoxazole-3-Carbonyl Chloride is a versatile and highly reactive organic intermediate, essential for the synthesis of complex heterocyclic compounds. Its value lies in its role as a key acylating agent, enabling the efficient introduction of the 5-methylisoxazole-3-carbonyl moiety into target molecules. This compound is primarily needed by research institutions and manufacturers in the pharmaceutical and agrochemical industries for developing new active ingredients.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of novel drug candidates, particularly in medicinal chemistry research.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides that require specific heterocyclic frameworks for activity.
• Chemical Research & Development: Serves as a fundamental reagent for constructing complex isoxazole-containing molecules in academic and industrial labs.
• Active Pharmaceutical Ingredient (API) Manufacturing: Employed in the scalable synthesis of APIs where the isoxazole ring is a core structural component.
• Ligand and Catalyst Development: Useful for creating specialized ligands used in catalytic processes and material science.
• Fine Chemical Production: Integral to the manufacture of high-value, low-volume specialty chemicals for various industrial applications.

Basic Information

Product Name	5-Methylisoxazole-3-Carbonyl Chloride
CAS No.	39499-34-8
Molecular Formula	C6H4ClNO2
Molecular Weight	157.55 g/mol
Synonyms	5-Methyl-3-isoxazolecarbonyl chloride; 5-Methylisoxazole-3-carboxylic acid chloride; 3-Carboxy-5-methylisoxazole chloride; 5-Methyl-1,2-oxazole-3-carbonyl chloride; 5-Methylisoxazolyl-3-carbonyl chloride; 39499-34-8; 5-Methyl-3-isoxazoyl chloride
EINECS	Contact for details

Quality Control

Our 5-Methylisoxazole-3-Carbonyl Chloride is produced under strict quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC and NMR, to ensure high purity and consistency. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. Due to its hygroscopic and reactive nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and decomposition. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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