Description

Cyclopropanecarboxylic Acid, 2-Ethynyl-2-Methyl-, Methyl Ester, trans- (9Ci) is a specialized, high-purity chemical intermediate featuring a unique cyclopropane ring and an ethynyl functional group. This compound matters for its role as a critical building block in advanced organic synthesis, enabling the construction of complex molecular architectures. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of new drug candidates, particularly those requiring a rigid, three-membered ring structure.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where the cyclopropane moiety can enhance biological activity.
• Material Science Research: Acts as a precursor for monomers or ligands in the development of specialized polymers and advanced materials.
• Organic Synthesis Building Block: Utilized in academic and industrial laboratories for constructing complex natural products or novel chemical entities via click chemistry or cross-coupling reactions.
• Ligand and Catalyst Development: The ethynyl group provides a handle for creating sophisticated ligands used in catalytic processes.

Basic Information

Product Name	Cyclopropanecarboxylic Acid, 2-Ethynyl-2-Methyl-, Methyl Ester, trans- (9Ci)
CAS No.	79150-68-8
Molecular Formula	C8H10O2
Molecular Weight	138.16 g/mol
Synonyms	trans-2-Ethynyl-2-methylcyclopropanecarboxylic acid methyl ester; Methyl trans-2-ethynyl-2-methylcyclopropanecarboxylate; 2-Methyl-2-ethynylcyclopropanecarboxylic Acid Methyl Ester, trans-; (1R,2S)-rel-2-Ethynyl-2-methylcyclopropanecarboxylic Acid Methyl Ester; (1S,2R)-rel-2-Ethynyl-2-methylcyclopropanecarboxylic Acid Methyl Ester; 79150-68-8; Methyl 2-ethynyl-2-methyl-1-cyclopropanecarboxylate
EINECS	Contact for details

Quality Control

Our Cyclopropanecarboxylic Acid, 2-Ethynyl-2-Methyl-, Methyl Ester, trans- (9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC, GC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing all critical specifications. Our quality systems are designed to support cGMP compliance for pharmaceutical applications.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (by GC/HPLC)	≥ 97.0%
Isomeric Purity (trans-)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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