Description

4-Isoxazolecarboxylicacid,3-(3-Cyanophenyl)-,Methylester(9Ci) is a specialized heterocyclic building block of significant interest in advanced organic synthesis. This compound matters for its role as a key precursor in the development of novel pharmaceuticals and agrochemicals, particularly those targeting specific biological pathways. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a critical synthon in the research and development of new active pharmaceutical ingredients (APIs), especially for kinase inhibitors and other targeted therapies.
• Agrochemical Synthesis: Used in the creation of novel herbicides, fungicides, and insecticides, leveraging the bioactivity of the isoxazole and benzonitrile motifs.
• Material Science Research: Acts as a monomer or functionalizing agent in the development of advanced polymers and functional materials with specific optical or electronic properties.
• Chemical Biology Probes: Employed in the synthesis of molecular probes for studying enzyme function and cellular signaling pathways.
• Custom Synthesis & Contract Manufacturing: A valuable starting material for custom synthesis houses and CDMOs (Contract Development and Manufacturing Organizations) serving the life sciences sector.

Basic Information

Product Name	4-Isoxazolecarboxylicacid,3-(3-Cyanophenyl)-,Methylester(9Ci)
CAS No.	209731-38-4
Molecular Formula	C12H8N2O3
Molecular Weight	228.20 g/mol
Synonyms	Methyl 3-(3-cyanophenyl)isoxazole-4-carboxylate; 3-(3-Cyanophenyl)-4-isoxazolecarboxylic Acid Methyl Ester; 4-Carbomethoxy-3-(3-cyanophenyl)isoxazole; 3-(3-Cyanophenyl)isoxazole-4-carboxylic acid methyl ester; 209731-38-4; Methyl 3-(3-cyanophenyl)-1,2-oxazole-4-carboxylate
EINECS	Contact for details

Quality Control

Our 4-Isoxazolecarboxylicacid,3-(3-Cyanophenyl)-,Methylester(9Ci) is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical quality attributes are available upon request, supporting your regulatory and R&D documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%

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