Description

Cyclopropanepropanoic Acid, α-Chloro-β-Oxo-, Methyl Ester is a high-purity, specialized organic ester building block. This compound is valued for its reactive α-chloro-β-ketoester functional group, which makes it a versatile intermediate in advanced synthetic chemistry. It is primarily sought by R&D chemists and process development teams in the pharmaceutical and agrochemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Key synthon for the synthesis of active pharmaceutical ingredients (APIs), particularly those containing cyclopropane or complex ester motifs.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and insecticides that require cyclopropane ring systems.
• Organic Synthesis Building Block: Serves as a precursor for heterocyclic compounds, such as pyrazoles and isoxazoles, via reactions with nucleophiles.
• Material Science Research: Investigated as a monomer or cross-linking agent for developing specialty polymers with unique properties.
• Chemical Reference Standard: Supplied to analytical laboratories for method development and quality control testing.

Basic Information

Product Name	Cyclopropanepropanoic Acid, α-Chloro-β-Oxo-, Methyl Ester
CAS No.	926928-04-3
Molecular Formula	C8H11ClO3
Molecular Weight	190.62 g/mol
Synonyms	Methyl 2-chloro-3-oxo-4-cyclopropylbutanoate; Methyl α-chloro-β-oxocyclopropanepropanoate; 4-Cyclopropyl-2-chloro-3-oxobutanoic acid methyl ester; 2-Chloro-3-oxo-4-cyclopropylbutyric acid methyl ester; Cyclopropanepropanoic acid, 2-chloro-3-oxo-, methyl ester; (2-Chloro-3-oxo-4-cyclopropylbutanoic acid) methyl ester
EINECS	Contact for details

Quality Control

Our Cyclopropanepropanoic Acid, α-Chloro-β-Oxo-, Methyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. The container must be kept tightly closed to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	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.