Description

Cyclopentene, 1-Ethynyl-2-(1,2-Propadienyl)- (9Ci) is a highly functionalized, unsaturated cyclic hydrocarbon that serves as a valuable and versatile building block in advanced organic synthesis. Its unique structure, featuring both an ethynyl and a propargyl (allenyl) group on a cyclopentene ring, makes it a critical precursor for constructing complex molecular architectures. This specialty intermediate is primarily sought after by research institutions and fine chemical manufacturers developing novel pharmaceuticals, agrochemicals, and advanced materials.

Application

• Pharmaceutical Intermediate: A key synthon for the construction of complex, bioactive molecules and novel heterocyclic compounds in medicinal chemistry research.
• Agrochemical Synthesis: Used in the development of new active ingredients for crop protection products, leveraging its reactive functional groups.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers and advanced organic materials with tailored properties.
• Organic Synthesis Building Block: Employed in Diels-Alder reactions, cycloadditions, and other ring-forming transformations to create intricate carbocyclic and heterocyclic systems.
• Ligand and Catalyst Development: Utilized as a precursor for synthesizing novel ligands for transition metal catalysis and organocatalysts.
• Academic and R&D Laboratories: A valuable reagent for methodological studies and exploring new synthetic pathways in organic chemistry.

Basic Information

Item	Details
Product Name	Cyclopentene, 1-Ethynyl-2-(1,2-Propadienyl)- (9Ci)
CAS No.	374079-48-8
Molecular Formula	C10H8
Molecular Weight	128.17 g/mol
Synonyms	1-Ethynyl-2-(1,2-propadienyl)cyclopentene; 1-Ethynyl-2-propadienylcyclopentene; 2-(Prop-1,2-dien-1-yl)-1-ethynylcyclopentene; (2-Allenyl-1-ethynyl)cyclopentene; Cyclopentene, 1-ethynyl-2-(1,2-propadienyl)-; CAS 374079-48-8
EINECS	Contact for details

Quality Control

Every batch of Cyclopentene, 1-Ethynyl-2-(1,2-Propadienyl)- (9Ci) is produced and analyzed under strict quality protocols to ensure consistency and purity for research and development applications. We employ advanced analytical techniques, including GC, GC-MS, and NMR, to verify identity and quantify purity. A comprehensive Certificate of Analysis (COA) detailing batch-specific results is provided with each shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended long-term storage temperature is 2-8°C. Allow the container to reach ambient temperature before opening to minimize moisture ingress and degradation.

Specification

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

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