Description

4-Isoxazolecarbonyl Chloride, 5-Butyl-3-Methyl- (7Ci) is a specialized heterocyclic acid chloride derivative, serving as a critical building block in advanced organic synthesis. Its core value lies in its high reactivity, enabling efficient introduction of the isoxazolecarbonyl moiety into target molecules, which is essential for creating compounds with specific biological or material properties. This intermediate is primarily needed by research and development chemists in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, particularly in medicinal chemistry programs targeting central nervous system (CNS) disorders, inflammation, or infectious diseases.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides, where the isoxazole ring can contribute to specific modes of action.
• Material Science Research: Employed in the creation of advanced polymers, liquid crystals, or organic electronic materials that require the incorporation of heterocyclic structures for tailored properties.
• Chemical Biology Probes: Acts as a reagent for modifying proteins, peptides, or other biomolecules to create probes for studying biological pathways and mechanisms.
• Custom Synthesis & Contract Manufacturing: A vital starting material for custom synthesis houses and CDMOs (Contract Development and Manufacturing Organizations) producing complex organic molecules for clients.

Basic Information

Product Name	4-Isoxazolecarbonyl Chloride, 5-Butyl-3-Methyl- (7Ci)
CAS No.	90415-80-8
Molecular Formula	C9H12ClNO2
Molecular Weight	201.65 g/mol
Synonyms	5-Butyl-3-methyl-4-isoxazolecarbonyl chloride; 5-Butyl-3-methylisoxazole-4-carbonyl chloride; 3-Methyl-5-butylisoxazole-4-carbonyl chloride; 4-Carbonyl chloride-5-butyl-3-methylisoxazole; 5-n-Butyl-3-methyl-4-isoxazolecarbonyl chloride; 90415-80-8 (CAS); 4-Isoxazolecarbonyl chloride, 5-butyl-3-methyl-
EINECS	Contact for details

Quality Control

Our 4-Isoxazolecarbonyl Chloride, 5-Butyl-3-Methyl- (7Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the high standards required for research and development applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

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 degradation. Keep away from heat, open flames, and incompatible materials such as strong bases, alcohols, and water.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or solid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95% (Typical 97-99%)
Water Content (KF)	≤ 0.5%

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