Description

3-Isoxazolecarbonyl Chloride, 5-(2-Methylpropyl)- (9Ci) is a specialized organic building block featuring a reactive acid chloride group on an isoxazole heterocycle. This compound is valued for its role as a key intermediate in the synthesis of more complex molecules, particularly in pharmaceutical and agrochemical research. It is primarily sought by R&D chemists and process development scientists working on novel active ingredients. The product is supplied with a high level of purity and consistency to ensure reliable performance in sensitive synthetic applications.

Application

• Pharmaceutical Intermediate: Serves as a crucial building block for the synthesis of novel drug candidates, particularly those containing the isoxazole pharmacophore.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides where the isoxazole moiety can impart specific biological activity.
• Material Science: Acts as a monomer or cross-linking agent in the creation of specialized polymers with unique thermal or chemical resistance properties.
• Chemical Synthesis: Employed in academic and industrial laboratories for constructing complex heterocyclic compounds and for introducing the 5-(2-methylpropyl)isoxazole carbonyl group into target molecules.
• Ligand & Catalyst Development: Utilized in the preparation of specialized ligands for metal catalysis or in the synthesis of catalyst precursors.

Basic Information

Product Name	3-Isoxazolecarbonyl Chloride, 5-(2-Methylpropyl)- (9Ci)
CAS No.	717871-85-7
Molecular Formula	C8H10ClNO2
Molecular Weight	187.62 g/mol
Synonyms	5-Isobutylisoxazole-3-carbonyl chloride; 5-(2-Methylpropyl)-1,2-oxazole-3-carbonyl chloride; 3-Carbonyl chloride-5-isobutylisoxazole; 5-Isobutyl-3-isoxazolecarbonyl chloride; 717871-85-7; 5-(2-Methylpropyl)isoxazole-3-carboxylic acid chloride; Isobutylisoxazole carbonyl chloride
EINECS	Contact for details

Quality Control

Every batch of 3-Isoxazolecarbonyl Chloride, 5-(2-Methylpropyl)- (9Ci) is manufactured and tested under strict quality management protocols to ensure high purity and batch-to-batch consistency. Our standard grade meets typical research and development requirements, with purity verified by advanced analytical techniques. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (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 heat, sparks, open flames, and incompatible materials such as strong bases, alcohols, and amines.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Purity (GC)	≥ 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.