Description

5-Isoxazolecarboxylic Acid, 3-Ethyl-, Methyl Ester is a specialized heterocyclic building block of significant interest in advanced organic synthesis. This compound matters for its role as a key precursor in the development of novel pharmacologically active molecules and agrochemicals. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries seeking to incorporate the versatile isoxazole moiety into their target structures.

Application

• Pharmaceutical Intermediate: Serves as a crucial synthon for the synthesis of potential drug candidates, particularly those targeting central nervous system (CNS) disorders, anti-inflammatory agents, and antimicrobials.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides, where the isoxazole ring can contribute to biological activity and metabolic stability.
• Material Science Precursor: Employed in the synthesis of functionalized polymers, liquid crystals, and organic electronic materials that require specific heterocyclic components.
• Chemical Biology Probes: Acts as a building block for creating molecular probes and tags used to study biological processes and enzyme functions.
• Custom Synthesis & Contract Manufacturing: A valuable starting material for custom synthesis projects and scale-up processes under cGMP or ISO standards for client-specific molecules.

Basic Information

Product Name	5-Isoxazolecarboxylic Acid, 3-Ethyl-, Methyl Ester
CAS No.	910321-87-8
Molecular Formula	C7H9NO3
Molecular Weight	155.15 g/mol
Synonyms	Methyl 3-ethyl-5-isoxazolecarboxylate; 3-Ethyl-5-isoxazolecarboxylic acid methyl ester; 5-Carbomethoxy-3-ethylisoxazole; Methyl 3-ethyl-1,2-oxazole-5-carboxylate; 3-Ethylisoxazole-5-carboxylic acid methyl ester; 910321-87-8; 5-Isoxazolecarboxylic acid, 3-ethyl-, methyl ester
EINECS	Contact for details

Quality Control

Our 5-Isoxazolecarboxylic Acid, 3-Ethyl-, Methyl Ester is produced and handled under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC, GC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical parameters. Our quality commitment supports applications requiring high-purity intermediates for research and development under ISO or cGMP guidelines.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider maintaining the material under an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
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.