Description

Cyclopropanecarboxylic Acid, 2-Acetyl-3-Methyl-, Ethyl Ester, (1Alpha,2Beta,3Beta)- (9Ci) is a specialized chiral cyclopropane derivative, a high-value building block in advanced organic synthesis. Its unique stereochemistry and functional groups make it a critical intermediate for constructing complex molecular architectures with precise three-dimensional control. This compound is essential for research and development chemists in the pharmaceutical and agrochemical industries, where it serves as a key precursor for active ingredients and novel chemical entities.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring stereochemically pure compounds.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where the cyclopropane ring contributes to biological activity and stability.
• Chemical Research & Development: Serves as a versatile building block in academic and industrial R&D for exploring new synthetic methodologies and creating compound libraries.
• Fine Chemical Production: Employed in the synthesis of complex flavors, fragrances, and other high-value specialty chemicals requiring specific stereochemistry.
• Material Science Precursor: Potential use in the development of advanced polymers and functional materials with tailored properties.

Basic Information

Product Name	Cyclopropanecarboxylic Acid, 2-Acetyl-3-Methyl-, Ethyl Ester, (1Alpha,2Beta,3Beta)- (9Ci)
CAS No.	189628-62-4
Molecular Formula	C9H14O3
Molecular Weight	170.21 g/mol
Synonyms	(1α,2β,3β)-2-Acetyl-3-methylcyclopropanecarboxylic acid ethyl ester; Ethyl (1α,2β,3β)-2-acetyl-3-methylcyclopropanecarboxylate; 2-Acetyl-3-methylcyclopropanecarboxylic acid ethyl ester, (1Alpha,2Beta,3Beta)-; (1R,2S,3S)-2-Acetyl-3-methylcyclopropanecarboxylic acid ethyl ester (if absolute configuration is known); Ethyl 2-acetyl-3-methylcyclopropanecarboxylate (stereoisomer); Chiral cyclopropane ester derivative.
EINECS	Contact for details

Quality Control

Our production of Cyclopropanecarboxylic Acid, 2-Acetyl-3-Methyl-, Ethyl Ester, (1Alpha,2Beta,3Beta)- (9Ci) adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is characterized using advanced analytical techniques including chiral HPLC, GC, NMR, and IR spectroscopy to confirm identity, stereochemical purity, and chemical composition. Certificates of Analysis (COA) detailing all specifications are provided with every shipment. We support cGMP compliance for pharmaceutical applications upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a 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	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (by GC/HPLC)	≥ 97.0%
Chiral Purity (Enantiomeric Excess)	≥ 98.0% ee
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.