Description

Cyclopropanecarboxylic Acid, 1-Ethynyl-2,2-Dimethyl-, Methyl Ester (9Ci) is a specialized organic building block featuring a cyclopropane ring and an ethynyl group, making it a valuable intermediate for advanced chemical synthesis. Its unique structure is critical for constructing complex molecular architectures with specific steric and electronic properties. This compound is primarily sought by researchers and manufacturers in the pharmaceutical and agrochemical sectors for developing novel active ingredients.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of new drug candidates, particularly for creating constrained analogs and bioactive molecules.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where the cyclopropane moiety can enhance biological activity and stability.
• Material Science Research: Acts as a monomer or precursor for developing specialty polymers and advanced materials with tailored properties.
• Organic Synthesis Building Block: Employed in academic and industrial R&D for cyclopropanation reactions and the introduction of alkyne functionalities into target molecules.
• Ligand and Catalyst Development: Utilized in the synthesis of novel ligands for asymmetric catalysis and metal-organic frameworks (MOFs).

Basic Information

Product Name	Cyclopropanecarboxylic Acid, 1-Ethynyl-2,2-Dimethyl-, Methyl Ester (9Ci)
CAS No.	153943-63-6
Molecular Formula	C9H12O2
Molecular Weight	152.19 g/mol
Synonyms	1-Ethynyl-2,2-dimethylcyclopropanecarboxylic acid methyl ester; Methyl 1-ethynyl-2,2-dimethylcyclopropanecarboxylate; 2,2-Dimethyl-1-(ethynyl)cyclopropanecarboxylic Acid Methyl Ester; 1-Ethynyl-2,2-dimethylcyclopropanecarboxylic Acid Methyl Ester; Methyl 2,2-dimethyl-1-(ethynyl)cyclopropanecarboxylate
EINECS	Contact for details

Quality Control

Our production of Cyclopropanecarboxylic Acid, 1-Ethynyl-2,2-Dimethyl-, Methyl Ester (9Ci) adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced chromatographic and spectroscopic techniques. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area at a controlled room temperature (15-25°C). Due to its highly volatile nature, ensure containers are kept tightly sealed when not in use to prevent evaporation and potential concentration changes. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC/HPLC)	Total impurities ≤ 3.0%
Density	~0.98 g/cm³ (20°C)

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