Description

1-Cyclopentene-1-Carboxylicacid,5-Ethenyl-,Methylester(9Ci) is a specialized organic ester building block with a unique cyclopentene core functionalized with a vinyl group. This compound matters as a versatile intermediate for synthesizing complex molecules in advanced research and fine chemical production. It is needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for constructing novel molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of novel active pharmaceutical ingredients (APIs), particularly for compounds with constrained ring systems.
• Agrochemical Synthesis: Used in the preparation of advanced crop protection agents and herbicides, leveraging its reactive vinyl and ester functionalities.
• Material Science Research: Acts as a monomer or cross-linking agent in the development of specialty polymers and advanced organic materials.
• Organic Synthesis Building Block: Employed in academic and industrial laboratories for Diels-Alder reactions, Michael additions, and other cyclization or functionalization processes.
• Flavor & Fragrance Chemistry: Potential intermediate for creating complex ester-based aroma molecules due to its structural features.
• Ligand & Catalyst Development: Useful precursor for synthesizing novel chiral ligands or organometallic catalysts for asymmetric synthesis.

Basic Information

Product Name	1-Cyclopentene-1-Carboxylicacid,5-Ethenyl-,Methylester(9Ci)
CAS No.	102979-48-6
Molecular Formula	C9H12O2
Molecular Weight	152.19 g/mol
Synonyms	5-Ethenyl-1-cyclopentene-1-carboxylic acid methyl ester; Methyl 5-vinyl-1-cyclopentene-1-carboxylate; 1-Cyclopentene-1-carboxylic acid, 5-ethenyl-, methyl ester; 5-Vinyl-1-cyclopentene-1-carboxylic acid methyl ester; Methyl 5-vinylcyclopent-1-ene-1-carboxylate; 102979-48-6; 5-Ethenyl-1-cyclopentene-1-carboxylic acid methyl ester (9CI)
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. We employ advanced analytical techniques including HPLC, GC, and NMR to verify identity, purity, and consistency. Certificates of Analysis (COA) are available upon request, detailing batch-specific results for all critical parameters.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and organic solvents. Recommended storage temperature is between 2°C and 8°C for long-term stability. Allow the container to reach ambient temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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