Description

Diethyl 4-Methylenecyclopentane-1,2-Dicarboxylate is a high-purity, versatile diester building block used in advanced organic synthesis. Its unique cyclopentene scaffold with an exocyclic methylene group makes it a valuable precursor for constructing complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key synthon for the construction of complex carbocyclic and heterocyclic structures found in active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides, leveraging its reactive sites for structural diversification.
• Material Science Monomer: Serves as a precursor for specialty polymers and resins, where its rigid cyclopentane core can impart specific thermal or mechanical properties.
• Organic Synthesis Building Block: Employed in Diels-Alder reactions, Michael additions, and other cycloaddition or functionalization strategies to create complex organic molecules.
• Flavor & Fragrance Industry: Potential intermediate for synthesizing specific terpenoid-like aroma compounds due to its cyclic structure.
• Academic & R&D: A valuable reagent for methodological development and exploring new synthetic pathways in organic chemistry laboratories.

Basic Information

Product Name	Diethyl 4-Methylenecyclopentane-1,2-Dicarboxylate
CAS No.	343956-49-0
Molecular Formula	C12H18O4
Molecular Weight	226.27 g/mol
Synonyms	4-Methylenecyclopentane-1,2-dicarboxylic acid diethyl ester; Diethyl 4-methylidenecyclopentane-1,2-dicarboxylate; 1,2-Cyclopentanedicarboxylic acid, 4-methylene-, diethyl ester; 4-Methylenepentanedioic acid diethyl ester (derivative); 4-Methylenecyclopentane-1,2-dicarboxylate diethyl ester; Diethyl 4-methylene-1,2-cyclopentanedicarboxylate; 1,2-Diethoxycarbonyl-4-methylenecyclopentane
EINECS	Contact for details

Quality Control

Our Diethyl 4-Methylenecyclopentane-1,2-Dicarboxylate is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chromatographic purity assays and structural confirmation, to ensure it meets the high standards required for research and industrial synthesis. A Certificate of Analysis (COA) detailing specific results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong acids and incompatible materials such as strong oxidizing agents. For long-term storage, consider maintaining under an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0% (Area %)
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.