Description

3-Isoxazolecarboxylicacid,5-(4-Methoxyphenyl)-4-Methyl-,Ethylester(9Ci) CAS NO 51291-35-1 is a specialized heterocyclic building block of significant interest in advanced organic synthesis. This compound matters as a key intermediate for constructing complex molecular architectures, particularly in pharmaceutical research and development. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries for creating novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders or possessing anti-inflammatory properties.
• Agrochemical Research: Used in the development of new herbicides, fungicides, or insecticides, leveraging the isoxazole moiety's bioactivity.
• Material Science: Acts as a building block for advanced polymers or liquid crystals, where the aromatic and heterocyclic structure can impart specific electronic or thermal properties.
• Academic & Contract Research: Employed in university and CRO laboratories for methodological studies in heterocyclic chemistry and the exploration of new chemical spaces.
• Fine Chemical Synthesis: Utilized for the custom synthesis of complex, high-value specialty chemicals for various industrial applications.

Basic Information

Product Name	3-Isoxazolecarboxylicacid,5-(4-Methoxyphenyl)-4-Methyl-,Ethylester(9Ci)
CAS No.	51291-35-1
Molecular Formula	C14H15NO4
Molecular Weight	261.27 g/mol
Synonyms	Ethyl 5-(4-methoxyphenyl)-4-methylisoxazole-3-carboxylate; 5-(4-Methoxyphenyl)-4-methyl-3-isoxazolecarboxylic acid ethyl ester; 3-Carbethoxy-5-(p-methoxyphenyl)-4-methylisoxazole; 4-Methyl-5-(4-methoxyphenyl)isoxazole-3-carboxylic acid ethyl ester; Ethyl 4-methyl-5-(4-methoxyphenyl)-1,2-oxazole-3-carboxylate
EINECS	Contact for details

Quality Control

Our 3-Isoxazolecarboxylicacid,5-(4-Methoxyphenyl)-4-Methyl-,Ethylester(9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the high standards required for research and process chemistry. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are available upon request to support your quality and regulatory documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from heat, sparks, and open flame. For long-term storage under inert atmosphere, please contact us for specific recommendations.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Purity (HPLC, Area %)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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