Product Name: Diethyl 3-Cyclopentene-1,1-dicarboxylate
Other Name: 3-Cyclopentene-1,1-dicarboxylic acid, diethyl ester;3-Cyclopentene-1,1-dicarboxylic acid, 1,1-diethyl ester; TB-1853
CAS No.: 21622-00-4
Chemical Structure:

Diethyl 3-Cyclopentene-1,1-dicarboxylate Application:
Diethyl 3-Cyclopentene-1,1-dicarboxylate is a versatile organic intermediate widely employed in fine chemical and pharmaceutical synthesis. This compound features a cyclopentene core substituted with two ester groups, offering high reactivity for functionalization and ring-opening reactions. Its unique structure makes it a valuable reagent in constructing complex molecular frameworks and chiral intermediates.
In industrial and research applications, Diethyl 3-Cyclopentene-1,1-dicarboxylate is commonly used for producing substituted cyclopentane derivatives, natural product analogs, and active pharmaceutical ingredients (APIs). It serves as a building block in the synthesis of heterocyclic compounds, fine chemicals, and functional materials. With high purity and consistent chemical performance, it provides reliable results across diverse synthesis routes, from laboratory-scale development to commercial manufacturing. Applications:
Pharmaceutical Intermediate – Used in the preparation of advanced intermediates and API precursors, particularly for compounds containing cyclopentane or ester functionalities.
Fine Chemical Synthesis – Acts as a key building block for synthesizing substituted cyclopentene derivatives and specialty chemicals in research and industrial production.
Material and Catalyst Development – Applied in the modification of polymeric or chiral materials, supporting innovation in functional material chemistry and organic catalysis.
Diethyl 3-Cyclopentene-1,1-dicarboxylate Packaging and Shipping:
Packaging: 1g/ bag, 10g/ bag, 1kg/bag or as customer’s required.
Shipping : DHL/ FedEx/ Air shipping
Diethyl 3-Cyclopentene-1,1-dicarboxylate Storage:
Store in Dry and Ventilated place with the Room Temperature, Preserved in Original Tight-Closed containers, Keep Away from Light and Heating.

