Description

Isoxazole-4-Carboxylic Acid Methyl Ester CAS NO 15166-81-1 is a high-purity heterocyclic building block and versatile synthetic intermediate. This compound is valued for its role in constructing complex molecular architectures, particularly in advanced pharmaceutical research and fine chemical synthesis. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for the development of new active ingredients and functional molecules.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and anti-infective agents.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides with novel modes of action.
• Chemical Synthesis: Serves as a versatile precursor for the preparation of more complex isoxazole derivatives and fused heterocyclic systems.
• Material Science: Potential monomer or additive for creating polymers with specific electronic or photophysical properties.
• Academic & Contract Research: Essential reagent for methodological studies in organic chemistry and for custom synthesis projects.

Basic Information

Product Name	Isoxazole-4-Carboxylic Acid Methyl Ester
CAS No.	15166-81-1
Molecular Formula	C6H7NO3
Molecular Weight	141.13 g/mol
Synonyms	Methyl Isoxazole-4-carboxylate; Methyl 4-Isoxazolecarboxylate; 4-Carbomethoxyisoxazole; 4-Methoxycarbonylisoxazole; Isoxazole-4-carboxylic acid methyl ester; 1,2-Oxazole-4-carboxylic acid, methyl ester
EINECS	Contact for details

Quality Control

Our Isoxazole-4-Carboxylic Acid Methyl Ester is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, to ensure it meets the high standards required for research and development. Certificates of Analysis (COA) with detailed chromatographic data are provided for every shipment to guarantee batch-to-batch consistency and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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 reference spectrum
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Residue on Ignition	≤ 0.1%
Heavy Metals	< 10 ppm

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