Description

2-Cyclopentene-1-Carboxaldehyde, 2-Ethynyl-1-Methoxy- (9Ci) is a specialized, high-value chemical intermediate featuring a unique cyclopentene core functionalized with both aldehyde and ethynyl groups. This compound matters for its role as a versatile building block in advanced organic synthesis, enabling the construction of complex molecular architectures. It is primarily needed by research chemists and process development scientists in the pharmaceutical and agrochemical industries for creating novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel small-molecule drug candidates, particularly those targeting complex biological pathways.
• Agrochemical Synthesis: Used in the research and development of new pesticides and herbicides, leveraging its reactive functional groups for structural diversification.
• Material Science Research: Acts as a monomer or cross-linking agent in the development of advanced polymers with tailored thermal or optical properties.
• Organic Synthesis Building Block: Employed in academic and industrial R&D for cycloaddition reactions, Sonogashira couplings, and other catalytic transformations to create complex heterocycles.
• Ligand and Catalyst Development: Utilized for constructing sophisticated ligand frameworks in asymmetric catalysis and organometallic chemistry.

Basic Information

Product Name	2-Cyclopentene-1-Carboxaldehyde, 2-Ethynyl-1-Methoxy- (9Ci)
CAS No.	225662-34-0
Molecular Formula	C9H10O2
Molecular Weight	150.17 g/mol
Synonyms	2-Ethynyl-1-methoxy-2-cyclopentene-1-carboxaldehyde; 2-Ethynyl-2-cyclopentene-1-carboxaldehyde, 1-methoxy derivative; 1-Methoxy-2-ethynyl-2-cyclopentene-1-carbaldehyde; (1-Methoxy-2-ethynylcyclopent-2-en-1-yl)methanol (oxidized form reference); 2-Cyclopentene-1-carboxaldehyde, 2-ethynyl-1-methoxy-; 225662-34-0; 2-Ethynyl-1-methoxycyclopent-2-ene-1-carbaldehyde
EINECS	Contact for details

Quality Control

Every batch of 2-Cyclopentene-1-Carboxaldehyde, 2-Ethynyl-1-Methoxy- (9Ci) undergoes rigorous analytical testing to ensure identity, purity, and consistency. Our quality commitment includes adherence to in-house specifications developed for research and process chemistry applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to support your quality assurance protocols.

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 between 2°C and 8°C. Allow the container to reach ambient temperature before opening to minimize moisture ingress and degradation. Keep away from heat, sparks, and open flame.

Specification

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

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