Description

3-Isoxazolecarbonyl Chloride, 5-Methoxy- (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, enabling the efficient introduction of the 5-methoxyisoxazole-3-carbonyl moiety into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, where it is used to develop novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds targeting central nervous system (CNS) disorders and inflammation.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides, leveraging the bioactivity of the isoxazole ring.
• Peptide Mimetics & Bioconjugation: Facilitates the coupling of the isoxazole moiety to peptides or other biomolecules for drug discovery and biochemical research.
• Material Science Research: Acts as a monomer or cross-linking agent in the creation of specialized polymers with unique thermal or optical properties.
• Ligand Synthesis for Catalysis: Employed in the preparation of complex ligands for transition metal catalysts used in asymmetric synthesis.

Basic Information

Product Name	3-Isoxazolecarbonyl Chloride, 5-Methoxy- (9Ci)
CAS No.	53064-59-8
Molecular Formula	C5H4ClNO3
Molecular Weight	161.54 g/mol
Synonyms	5-Methoxyisoxazole-3-carbonyl chloride; 5-Methoxy-1,2-oxazole-3-carbonyl chloride; 3-Carbonylchloride-5-methoxyisoxazole; 5-Methoxy-3-isoxazolecarboxylic acid chloride; 5-Methoxyisoxazole-3-carboxylic acid chloride; 5-Methoxy-1,2-oxazole-3-carboxylic acid chloride
EINECS	Contact for details

Quality Control

Every batch of 3-Isoxazolecarbonyl Chloride, 5-Methoxy- (9Ci) is produced and tested under stringent quality management protocols to ensure consistency and reliability for your synthetic processes. Our products undergo rigorous quality testing, including advanced chromatographic analysis, to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory documentation.

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
Assay (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.