Description

5-Methyl-3-(2-Thienyl)Isoxazole-4-Carboxylic Acid is a high-purity, heterocyclic carboxylic acid derivative that serves as a critical building block in advanced organic synthesis. This compound is valued for its unique molecular architecture, which combines isoxazole and thiophene rings, making it a versatile intermediate for creating complex molecules with targeted properties. It is primarily sought after by research and development chemists in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients.

Application

• Pharmaceutical Intermediate: A key precursor in the research and synthesis of new drug candidates, particularly those targeting central nervous system (CNS) disorders, inflammation, and infectious diseases.
• Agrochemical Research: Used in the development of novel herbicides, fungicides, and insecticides, leveraging its heterocyclic structure for bioactivity.
• Material Science: Serves as a monomer or functional additive in the research of specialty polymers and advanced organic materials.
• Chemical Synthesis: An essential building block for constructing complex heterocyclic frameworks in academic and industrial organic chemistry laboratories.
• Bioconjugation & Probe Development: The carboxylic acid group allows for coupling reactions, making it useful in creating biochemical probes and diagnostic agents.

Basic Information

Product Name	5-Methyl-3-(2-Thienyl)Isoxazole-4-Carboxylic Acid
CAS No.	83817-53-2
Molecular Formula	C9H7NO3S
Molecular Weight	209.22 g/mol
Synonyms	5-Methyl-3-(thiophen-2-yl)isoxazole-4-carboxylic acid; 3-(2-Thienyl)-5-methyl-4-isoxazolecarboxylic acid; 4-Isoxazolecarboxylic acid, 5-methyl-3-(2-thienyl)-; 83817-53-2; 5-Methyl-3-thiophen-2-yl-isoxazole-4-carboxylic acid
EINECS	Contact for details

Quality Control

Our 5-Methyl-3-(2-Thienyl)Isoxazole-4-Carboxylic Acid is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with each shipment, confirming compliance with customer specifications and industry best practices for fine chemical intermediates.

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 sources and incompatible materials. For long-term storage, consider conditions under an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
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.