Description

3-Cyclopentene-1,3-Dicarboxylic Acid, Dimethyl Ester (9Ci) is a high-purity, versatile diester building block used in advanced organic synthesis. This compound is valued for its reactive cyclopentene core and ester functionalities, which enable its use in constructing complex molecular architectures. It is a critical intermediate for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs), particularly those requiring functionalized cyclopentane/cyclopentene scaffolds.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and plant growth regulators.
• Specialty Polymer Monomer: Acts as a monomer or co-monomer for creating polymers with specific thermal or mechanical properties.
• Organic Synthesis Building Block: Employed in Diels-Alder reactions, Michael additions, and other cycloaddition or functional group transformation chemistry in R&D laboratories.
• Ligand and Catalyst Development: Useful for synthesizing novel chiral ligands or organocatalysts for asymmetric synthesis.
• Material Science Research: Investigated for the development of advanced organic electronic materials or liquid crystals.

Basic Information

Product Name	3-Cyclopentene-1,3-Dicarboxylic Acid, Dimethyl Ester (9Ci)
CAS No.	163593-66-6
Molecular Formula	C10H14O4
Molecular Weight	198.22 g/mol
Synonyms	Dimethyl 3-Cyclopentene-1,3-dicarboxylate; 1,3-Cyclopentenedicarboxylic Acid, Dimethyl Ester; 3-Cyclopentene-1,3-dicarboxylic Acid Dimethyl Ester; Dimethyl Cyclopent-3-ene-1,3-dicarboxylate; 3-Cyclopentene-1,3-dicarboxylic Acid Methyl Ester; NSC 324919; 3-Cyclopentene-α,γ-dicarboxylic Acid, Dimethyl Ester
EINECS	Contact for details

Quality Control

Our 3-Cyclopentene-1,3-Dicarboxylic Acid, Dimethyl Ester (9Ci) is produced under strict quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and identity confirmation. Certificates of Analysis (COA) with detailed specifications are provided to guarantee consistency and traceability for your critical R&D and production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

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