Description

4-Isoxazolecarboxylicacid,3-Methoxy-5-Methyl-(8Ci,9Ci) is a heterocyclic carboxylic acid derivative that serves as a versatile and high-value synthetic intermediate. Its unique isoxazole core structure makes it a critical building block for the development of novel active pharmaceutical ingredients and advanced agrochemicals. This compound is essential for research and production in the pharmaceutical, agrochemical, and specialty chemical industries, where precise molecular architecture is required.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, anti-inflammatory agents, and antimicrobials.
• Agrochemical Synthesis: Building block for developing new-generation herbicides, fungicides, and insecticides with improved efficacy and environmental profiles.
• Ligand and Catalyst Development: Used in organometallic chemistry to create specialized ligands for catalytic processes and material science applications.
• Chemical Research (R&D): Serves as a standard or starting material in academic and industrial research for exploring new heterocyclic chemistry and reaction pathways.
• Specialty Polymer Modification: Functional monomer for introducing heterocyclic motifs into polymers to alter thermal, optical, or mechanical properties.

Basic Information

Product Name	4-Isoxazolecarboxylicacid,3-Methoxy-5-Methyl-(8Ci,9Ci)
CAS No.	16877-56-8
Molecular Formula	C6H7NO4
Molecular Weight	157.12 g/mol
Synonyms	3-Methoxy-5-methyl-1,2-oxazole-4-carboxylic acid; 3-Methoxy-5-methylisoxazole-4-carboxylic acid; 4-Carboxy-3-methoxy-5-methylisoxazole; 5-Methyl-3-methoxyisoxazole-4-carboxylic acid; 16877-56-8; 3-Methoxy-5-methyl-4-isoxazolecarboxylic acid; 4-Isoxazolecarboxylic acid, 3-methoxy-5-methyl-
EINECS	Contact for details

Quality Control

Our 4-Isoxazolecarboxylicacid,3-Methoxy-5-Methyl-(8Ci,9Ci) is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are provided and can be tailored to meet specific customer or regulatory requirements.

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 strong oxidizing agents and strong bases. For long-term storage, consider inert atmosphere conditions to maintain optimal purity.

Specification

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