Description

Cyclopropanecarboxylic Acid, 2-Ethynyl-2-Methyl-, Methyl Ester, cis- (9Ci) is a specialized organic compound featuring a cyclopropane ring and an ethynyl group, making it a valuable building block in advanced chemical synthesis. Its unique cis-configured, strained-ring structure is critical for constructing complex molecular architectures with precise stereochemistry. This high-purity intermediate is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries developing novel active ingredients.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of new drug candidates, particularly in creating molecules with constrained geometries.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides where the cyclopropane moiety can enhance biological activity and stability.
• Material Science Research: Serves as a precursor for novel polymers and advanced materials requiring rigid, alkyne-functionalized components.
• Organic Synthesis Building Block: Employed in academic and industrial R&D for cyclopropanation reactions and click chemistry applications via its ethynyl group.
• Ligand and Catalyst Development: Useful for synthesizing specialized ligands for asymmetric catalysis and metal-organic frameworks (MOFs).

Basic Information

Product Name	Cyclopropanecarboxylic Acid, 2-Ethynyl-2-Methyl-, Methyl Ester, cis- (9Ci)
CAS No.	79150-67-7
Molecular Formula	C8H10O2
Molecular Weight	138.16 g/mol
Synonyms	Methyl cis-2-ethynyl-2-methylcyclopropanecarboxylate; cis-Methyl 2-ethynyl-2-methylcyclopropanecarboxylate; 2-Ethynyl-2-methylcyclopropanecarboxylic acid methyl ester, cis-; (1R,2S)-rel-2-Ethynyl-2-methylcyclopropanecarboxylic Acid Methyl Ester; Methyl (1R,2S)-2-ethynyl-2-methylcyclopropanecarboxylate
EINECS	Contact for details

Quality Control

Every batch of Cyclopropanecarboxylic Acid, 2-Ethynyl-2-Methyl-, Methyl Ester, cis- (9Ci) is manufactured under strict quality management systems. We employ advanced analytical techniques including GC, HPLC, and NMR to ensure identity, purity, and consistency meet the exacting standards required for research and commercial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, well-ventilated area. Recommended storage temperature is 2-8°C for long-term stability. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 97.0%
Purity (GC Area %)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Specific Rotation (if chiral)	Contact for details

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