Description

5-Isoxazolecarboxylicacid,3-Chloro-,Methylester(9Ci) CAS NO 96735-12-5 is a high-purity, versatile heterocyclic building block essential for advanced organic synthesis. Its core value lies in its reactive ester group and halogenated isoxazole ring, enabling precise molecular construction in complex chemical processes. This compound is critically needed by research and development chemists in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and intermediates.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and anti-infective agents.
• Agrochemical Synthesis: Used in the development of next-generation herbicides, fungicides, and insecticides, leveraging the bioactive isoxazole scaffold.
• Material Science Research: Serves as a monomer or functionalizing agent for creating specialized polymers with unique thermal or optical properties.
• Chemical Biology Probes: Employed in the design and synthesis of molecular probes for studying enzyme mechanisms and protein interactions.
• Custom Synthesis & Contract Manufacturing: A critical starting material for fine chemical manufacturers offering bespoke synthesis services to the life sciences sector.

Basic Information

Product Name	5-Isoxazolecarboxylicacid,3-Chloro-,Methylester(9Ci)
CAS No.	96735-12-5
Molecular Formula	C5H4ClNO3
Molecular Weight	161.54 g/mol
Synonyms	3-Chloro-5-methoxycarbonylisoxazole; Methyl 3-chloro-1,2-oxazole-5-carboxylate; 3-Chloro-5-(methoxycarbonyl)isoxazole; 3-Chloro-5-carbomethoxyisoxazole; Methyl 3-chloroisoxazole-5-carboxylate; 5-Isoxazolecarboxylic acid, 3-chloro-, methyl ester; 3-Chloro-5-isoxazolecarboxylic acid methyl ester
EINECS	Contact for details

Quality Control

Every batch of our 5-Isoxazolecarboxylicacid,3-Chloro-,Methylester(9Ci) is manufactured under strict quality management systems. We guarantee high chemical purity and consistency, supported by comprehensive analytical testing including HPLC, GC, and NMR. A detailed Certificate of Analysis (COA) is provided with each shipment, ensuring traceability and compliance with your research or production specifications.

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). Keep away from strong bases and incompatible organic solvents. The container must be kept tightly closed in a dry environment to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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