Description

3-Methoxy-Isoxazole-5-Carboxylic Acid is a high-purity heterocyclic carboxylic acid building block essential for advanced organic synthesis. This compound is valued for its role as a key intermediate in the development of novel active pharmaceutical ingredients (APIs) and agrochemicals. It is primarily sought by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A crucial building block for the synthesis of novel drug candidates, particularly in medicinal chemistry research.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and insecticides with specific activity profiles.
• Chemical Research & Development: Serves as a versatile scaffold for creating new heterocyclic compounds in academic and industrial R&D labs.
• Ligand and Catalyst Development: Employed in the preparation of specialized ligands for metal catalysis and coordination chemistry.
• Material Science Precursor: Potential use in synthesizing organic components for advanced materials and functional polymers.

Basic Information

Product Name	3-Methoxy-Isoxazole-5-Carboxylic Acid
CAS No.	13626-59-0
Molecular Formula	C5H5NO4
Molecular Weight	143.10 g/mol
Synonyms	5-Methoxyisoxazole-3-carboxylic acid; 3-Methoxy-5-isoxazolecarboxylic acid; 5-Carboxy-3-methoxyisoxazole; 3-Methoxy-1,2-oxazole-5-carboxylic acid; 3-Methoxyisoxazole-5-carboxylic acid; Isoxazole-5-carboxylic acid, 3-methoxy-; 13626-59-0 (CAS)
EINECS	Contact for details

Quality Control

Our 3-Methoxy-Isoxazole-5-Carboxylic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, which includes HPLC purity, NMR confirmation, and other critical parameters. Our quality commitment supports applications requiring high-purity intermediates for regulated synthesis.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong bases and oxidizing agents. 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 (NMR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
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.