Description

4-Isoxazolecarboxylicacid,3-Chloro-4,5-Dihydro-5-Methyl-,Ethylester(9Ci) CAS NO 201138-38-7 is a specialized heterocyclic building block of significant interest in advanced organic synthesis. This compound serves as a critical intermediate for the development of novel active pharmaceutical ingredients (APIs) and agrochemicals, offering a versatile scaffold for further functionalization. It is primarily sought after by research and development teams in the pharmaceutical, agrochemical, and fine chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders or possessing anti-infective properties.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides, leveraging the bioactivity of the isoxazole moiety.
• Fine Chemical Production: Serves as a precursor for the manufacture of complex specialty chemicals used in material science and catalysis.
• Academic & Contract Research: Essential reagent for methodological studies in organic chemistry and for custom synthesis projects in contract research organizations (CROs).
• Chemical Biology Probes: Utilized in the design and synthesis of molecular probes for studying biological pathways and target engagement.

Basic Information

Product Name	4-Isoxazolecarboxylicacid,3-Chloro-4,5-Dihydro-5-Methyl-,Ethylester(9Ci)
CAS No.	201138-38-7
Molecular Formula	C8H10ClNO3
Molecular Weight	203.62 g/mol
Synonyms	Ethyl 3-chloro-5-methyl-4,5-dihydroisoxazole-4-carboxylate; 3-Chloro-4,5-dihydro-5-methyl-4-isoxazolecarboxylic acid ethyl ester; 4-Isoxazolecarboxylic acid, 3-chloro-4,5-dihydro-5-methyl-, ethyl ester (9CI); Ethyl 3-chloro-5-methyl-2-oxa-3-azabicyclo[4.1.0]hept-3-ene-4-carboxylate (theoretical); 3-Chloro-5-methyl-4,5-dihydroisoxazole-4-carboxylic acid ethyl ester
EINECS	Contact for details

Quality Control

Our production of 4-Isoxazolecarboxylicacid,3-Chloro-4,5-Dihydro-5-Methyl-,Ethylester(9Ci) adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications and test results are provided and available upon request, supporting your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 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.