Description

Bicyclo[4.1.0]Hept-3-Ene, 3-Ethynyl-1-Methyl- (9Ci) is a specialized strained bicyclic alkene building block featuring both a cyclopropane ring and an ethynyl group, making it a valuable intermediate for advanced organic synthesis. Its unique fused-ring structure and reactive alkyne functionality enable the construction of complex molecular architectures, which is critical for developing novel materials and active pharmaceutical ingredients. This high-purity compound is essential for researchers and process chemists in pharmaceutical R&D, agrochemical discovery, and materials science who require precise, high-quality intermediates for innovative synthesis.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel drug candidates, particularly for constructing complex, strained-ring cores found in bioactive molecules.
• Agrochemical Synthesis: Used in the research and development of new pesticides and herbicides, where its unique bicyclic structure can contribute to novel modes of action.
• Materials Science Research: Acts as a monomer or cross-linking agent in the development of advanced polymers with specific thermal or mechanical properties.
• Organic Synthesis Building Block: Employed in Diels-Alder reactions, cycloadditions, and other ring-forming transformations to create complex polycyclic compounds in academic and industrial laboratories.
• Ligand and Catalyst Development: Utilized for synthesizing novel chelating ligands or organometallic complexes due to the reactivity of its alkyne and alkene groups.
• Fine Chemical Production: Functions as a critical intermediate in the multi-step synthesis of specialty chemicals, flavors, and fragrances.

Basic Information

Product Name	Bicyclo[4.1.0]Hept-3-Ene, 3-Ethynyl-1-Methyl- (9Ci)
CAS No.	178742-89-7
Molecular Formula	C10H12
Molecular Weight	132.20 g/mol
Synonyms	3-Ethynyl-1-methylbicyclo[4.1.0]hept-3-ene; 1-Methyl-3-ethynylbicyclo[4.1.0]hept-3-ene; 3-Ethynyl-1-methyl-1,6-methano[10]annulene (related structure); Methyl ethynyl bicycloheptene; Bicyclo[4.1.0]hept-3-ene, 3-ethynyl-1-methyl-; CAS 178742-89-7
EINECS	Contact for details

Quality Control

Our Bicyclo[4.1.0]Hept-3-Ene, 3-Ethynyl-1-Methyl- (9Ci) is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity for research and development applications. Each lot is analyzed using advanced chromatographic and spectroscopic techniques, including GC, HPLC, and NMR, to confirm identity and quantify purity. Certificates of Analysis (COA) detailing all relevant specifications are provided with every shipment to support your quality assurance processes.

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, sparks, and open flames. For long-term storage, consider storing under an inert atmosphere such as nitrogen or argon to maximize stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC)	≤ 4.0% total

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