Description

3-Methyl-5-Phenyl-4-Isoxazolecarbonyl Chloride is a high-value, reactive chemical intermediate primarily used in advanced organic synthesis. Its core value lies in its acyl chloride functionality, which enables efficient coupling reactions to construct complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for the development of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, especially those containing the isoxazole heterocycle, which is prevalent in compounds with anti-inflammatory, antimicrobial, and anticancer activities.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where the isoxazole moiety can contribute to biological activity and environmental stability.
• Peptide Mimetics & Conjugation: Serves as an acylating agent for the modification of amino groups, facilitating the creation of peptide analogs or the conjugation of active molecules to carriers.
• Material Science Research: Employed in the development of specialty polymers and functional materials that require the incorporation of specific, complex organic units.
• Custom Synthesis & Contract Manufacturing: A critical reagent for custom synthesis houses and CROs/CMOs engaged in producing tailored molecules for client R&D programs.

Basic Information

Product Name	3-Methyl-5-Phenyl-4-Isoxazolecarbonyl Chloride
CAS No.	91182-77-3
Molecular Formula	C11H8ClNO2
Molecular Weight	221.64 g/mol
Synonyms	4-Isoxazolecarbonyl chloride, 3-methyl-5-phenyl-; 3-Methyl-5-phenylisoxazole-4-carbonyl chloride; 5-Phenyl-3-methyl-4-isoxazolecarbonyl chloride; 3-Methyl-5-phenyl-1,2-oxazole-4-carbonyl chloride; NSC 405124; AI3-52011; Isoxazole-4-carbonyl chloride, 3-methyl-5-phenyl-
EINECS	Contact for details

Quality Control

Our production of 3-Methyl-5-Phenyl-4-Isoxazolecarbonyl Chloride adheres to stringent quality management protocols. Each batch is characterized and tested to ensure high purity and consistency, meeting the exacting standards required for pharmaceutical and fine chemical applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity (typically by HPLC or titration), and impurity profiles is provided with every shipment to guarantee supply reliability and technical compliance.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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