Description

4-Isoxazolecarboxylicacid,4,5-Dihydro-5-Oxo-,Ethylester(9Ci) is a specialized heterocyclic building block of significant interest in advanced organic synthesis. This compound matters for its role as a versatile precursor in the development of novel pharmacologically active molecules and agrochemicals. It is primarily needed by research institutions and manufacturers in the pharmaceutical, agrochemical, and fine chemical industries for creating new compounds with targeted biological activities.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of new drug candidates, particularly those targeting central nervous system disorders and infectious diseases.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where the isoxazole ring contributes to biological efficacy.
• Fine Chemical Production: Acts as a building block for synthesizing complex molecules used in dyes, pigments, and functional materials.
• Academic & Contract Research: Employed in university and CRO laboratories for methodological studies and the exploration of new chemical spaces in heterocyclic chemistry.
• Material Science Research: Investigated as a precursor for organic electronic materials and metal-organic frameworks (MOFs).

Basic Information

Product Name	4-Isoxazolecarboxylicacid,4,5-Dihydro-5-Oxo-,Ethylester(9Ci)
CAS No.	73710-42-6
Molecular Formula	C6H7NO4
Molecular Weight	157.12 g/mol
Synonyms	Ethyl 4,5-dihydro-5-oxo-4-isoxazolecarboxylate; 4,5-Dihydro-5-oxo-4-isoxazolecarboxylic acid ethyl ester; 5-Oxo-4,5-dihydroisoxazole-4-carboxylic acid ethyl ester; Ethyl 5-oxo-4,5-dihydro-1,2-oxazole-4-carboxylate; 4-Carbethoxy-5-isoxazolinone; 4-Ethoxycarbonyl-5-isoxazolinone; 73710-42-6
EINECS	Contact for details

Quality Control

Our 4-Isoxazolecarboxylicacid,4,5-Dihydro-5-Oxo-,Ethylester(9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory needs.

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 heat sources and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
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.