Description

4-Isoxazolecarboxylicacid,3-(2-Chlorophenyl)-5-Formyl-,Methylester(9Ci) is a specialized heterocyclic building block of significant interest in advanced organic synthesis. This compound matters for its role as a key intermediate in the development of novel active pharmaceutical ingredients (APIs) and agrochemicals, where its unique isoxazole core provides a versatile scaffold for molecular modification. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries for constructing complex molecules with targeted biological activity.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, inflammation, or infectious diseases.
• Agrochemical Research: Serves as a key building block for developing new generation herbicides, fungicides, or insecticides with improved efficacy and selectivity.
• Material Science Chemistry: Used in the research and development of advanced organic materials, such as ligands for catalysts or components for organic electronics.
• Academic & Institutional R&D: Employed in university and research institute laboratories for methodological studies in heterocyclic chemistry and the exploration of new chemical spaces.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for the production of bespoke compounds for client projects.

Basic Information

Product Name	4-Isoxazolecarboxylicacid,3-(2-Chlorophenyl)-5-Formyl-,Methylester(9Ci)
CAS No.	682352-78-9
Molecular Formula	C12H8ClNO4
Molecular Weight	265.65 g/mol
Synonyms	Methyl 3-(2-chlorophenyl)-5-formylisoxazole-4-carboxylate; 3-(2-Chlorophenyl)-5-formyl-4-isoxazolecarboxylic acid methyl ester; 4-Isoxazolecarboxylic acid, 3-(2-chlorophenyl)-5-formyl-, methyl ester (9CI); Methyl 3-(o-chlorophenyl)-5-formyl-1,2-oxazole-4-carboxylate; 682352-78-9; AI3-52735
EINECS	Contact for details

Quality Control

Our 4-Isoxazolecarboxylicacid,3-(2-Chlorophenyl)-5-Formyl-,Methylester(9Ci) is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via NMR and IR spectroscopy, to ensure it meets the high standards required for research and process chemistry. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and consistency for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended storage temperature is 2-8°C for long-term stability. This material is easily oxidized and should be handled under an inert atmosphere to maintain purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 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.