Description

5-Isoxazolecarbonyl Chloride, 3-Methoxy- (9Ci) is a high-purity, reactive chemical intermediate primarily used in advanced organic synthesis. This compound is critical for researchers and manufacturers requiring precise building blocks for complex molecular architectures. It is particularly valuable in the pharmaceutical and agrochemical industries for the development of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, particularly those containing the isoxazole heterocycle.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides.
• Fine Chemical Production: Serves as a versatile acylating agent for the preparation of specialized amides, esters, and other derivatives.
• Material Science Research: Employed in the development of new polymers and functional materials with specific properties.
• Academic & R&D: A valuable reagent for methodological studies and the construction of complex organic molecules in laboratory settings.

Basic Information

Product Name	5-Isoxazolecarbonyl Chloride, 3-Methoxy- (9Ci)
CAS No.	54258-24-1
Molecular Formula	C5H4ClNO3
Molecular Weight	161.54 g/mol
Synonyms	3-Methoxy-5-isoxazolecarbonyl chloride; 3-Methoxyisoxazole-5-carbonyl chloride; 3-Methoxy-1,2-oxazole-5-carbonyl chloride; 5-Carboxy-3-methoxyisoxazole chloride; 3-Methoxy-5-isoxazolecarboxylic acid chloride
EINECS	Contact for details

Quality Control

Our 5-Isoxazolecarbonyl Chloride, 3-Methoxy- (9Ci) is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. All products undergo rigorous analytical testing, including HPLC, NMR, and IR spectroscopy. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation. Keep away from strong acids and incompatible materials.

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.