Description

Cyclopropanecarboxylic Acid, 2-Ethylidene-3-Methyl-, Methyl Ester, (1Alpha,2E,3Alpha)- CAS NO 42419-01-2 is a high-purity, specialized cyclopropane derivative ester used as a critical synthetic intermediate in advanced organic chemistry. This compound is valued for its unique sterically constrained three-membered ring structure, which is essential for constructing complex molecular frameworks with specific stereochemistry. It is primarily sought by research institutions and pharmaceutical companies for the development of novel active pharmaceutical ingredients (APIs) and fine chemicals.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of proprietary drug candidates and complex bioactive molecules.
• Agrochemical Research: Used in the development of novel pesticides and herbicides, leveraging its cyclopropane moiety for biological activity.
• Material Science: Serves as a monomer or precursor for specialized polymers and advanced materials requiring rigid structural components.
• Academic & Industrial R&D: Employed in methodological studies and as a reagent for stereoselective synthesis and cyclopropanation reactions.
• Flavor & Fragrance Industry: Potential use in the synthesis of unique aroma chemicals due to its ester functional group and complex structure.

Basic Information

Product Name	Cyclopropanecarboxylic Acid, 2-Ethylidene-3-Methyl-, Methyl Ester, (1Alpha,2E,3Alpha)-
CAS No.	42419-01-2
Molecular Formula	C9H14O2
Molecular Weight	154.21 g/mol
Synonyms	(1α,2E,3α)-2-Ethylidene-3-methylcyclopropanecarboxylic acid methyl ester; Methyl (1α,2E,3α)-2-ethylidene-3-methylcyclopropanecarboxylate; 2-Ethylidene-3-methylcyclopropanecarboxylic acid methyl ester; (1R,2S,3R)-2-Ethylidene-3-methylcyclopropanecarboxylic acid methyl ester; Cyclopropanecarboxylic acid, 2-ethylidene-3-methyl-, methyl ester, (1R,2S,3R)-; Methyl 2-ethylidene-3-methylcyclopropanecarboxylate
EINECS	Contact for details

Quality Control

Every batch of our Cyclopropanecarboxylic Acid, 2-Ethylidene-3-Methyl-, Methyl Ester is produced and tested under a strict quality management system. We provide comprehensive analytical data to ensure the product meets the high standards required for research and development applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for each lot upon request.

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 sources and incompatible materials. 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
Assay (HPLC)	≥ 97.0%
Purity (GC)	≥ 98.0%
Specific Rotation	Contact for details
Water Content (KF)	≤ 0.5%

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