Description

3-Methyl-5-Phenyl-4-Isoxazolecarboxylic Acid is a versatile heterocyclic building block of significant interest in advanced organic synthesis. This compound matters as a key precursor for the development of novel pharmacologically active molecules, particularly within the agrochemical and pharmaceutical sectors. Industries involved in the research and production of active ingredients, fine chemicals, and complex organic intermediates are the primary users of this material.

Application

• Pharmaceutical Intermediate: Serves as a critical scaffold in the synthesis of novel drug candidates, particularly for anti-inflammatory and central nervous system (CNS) active compounds.
• Agrochemical Synthesis: Used as a building block for developing new herbicides, fungicides, and insecticides with specific modes of action.
• Organic Synthesis Reagent: Acts as a versatile precursor for constructing complex heterocyclic systems and functionalized isoxazole derivatives.
• Material Science Research: Employed in the development of specialty chemicals, dyes, and functional polymers requiring specific isoxazole motifs.
• Academic & R&D: A valuable compound for chemical research in universities and corporate laboratories exploring new synthetic methodologies.

Basic Information

Product Name	3-Methyl-5-Phenyl-4-Isoxazolecarboxylic Acid
CAS No.	17153-21-8
Molecular Formula	C11H9NO3
Molecular Weight	203.19 g/mol
Synonyms	4-Isoxazolecarboxylic acid, 3-methyl-5-phenyl-; 3-Methyl-5-phenyl-1,2-oxazole-4-carboxylic acid; 5-Phenyl-3-methyl-4-isoxazolecarboxylic acid; 3-Methyl-5-phenylisoxazole-4-carboxylic acid; 17153-21-8; NSC 163022; AI3-52202
EINECS	Contact for details

Quality Control

Our 3-Methyl-5-Phenyl-4-Isoxazolecarboxylic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specific results for purity, residual solvents, and related substances are available for every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials such as strong bases and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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