Description

5-Isoxazolecarboxylicacid,3-Methyl-4-Phenyl-,Ethylester(9Ci) CAS NO 153915-56-1 is a specialized heterocyclic building block belonging to the isoxazole ester class. This compound is valued for its role as a key synthetic intermediate in the development of novel active pharmaceutical ingredients (APIs) and advanced agrochemicals. It is primarily sought by research and development teams in the pharmaceutical, agrochemical, and fine chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of potential drug candidates, particularly those targeting central nervous system (CNS) disorders, anti-inflammatory agents, and enzyme inhibitors.
• Agrochemical Research: Serves as a core scaffold for developing new-generation herbicides, fungicides, and insecticides with improved efficacy and selectivity.
• Material Science: Used in the research and development of advanced polymers, liquid crystals, and organic electronic materials due to its rigid heterocyclic structure.
• Academic & Contract Research: Employed in university and CRO (Contract Research Organization) laboratories for methodological studies and the discovery of new chemical entities.
• Fine Chemical Synthesis: Acts as a versatile building block for creating complex esters, amides, and other derivatives for specialized chemical applications.

Basic Information

Product Name	5-Isoxazolecarboxylicacid,3-Methyl-4-Phenyl-,Ethylester(9Ci)
CAS No.	153915-56-1
Molecular Formula	C13H13NO3
Molecular Weight	231.25 g/mol
Synonyms	Ethyl 3-Methyl-4-phenylisoxazole-5-carboxylate; 3-Methyl-4-phenylisoxazole-5-carboxylic acid ethyl ester; 4-Phenyl-3-methyl-5-isoxazolecarboxylic acid ethyl ester; 5-Carbethoxy-3-methyl-4-phenylisoxazole; 153915-56-1; Ethyl 3-methyl-4-phenyl-1,2-oxazole-5-carboxylate; 3-Methyl-4-phenyl-5-isoxazolecarboxylic acid ethyl ester
EINECS	Contact for details

Quality Control

Our 5-Isoxazolecarboxylicacid,3-Methyl-4-Phenyl-,Ethylester(9Ci) is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications. We support cGMP standards for advanced applications.

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 incompatible organic solvents. For long-term storage, consider an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference standard
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Residual Solvents (GC)	Complies with ICH guidelines
Loss on Drying	≤ 0.5%

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