Description

1,3-Cyclopentadiene-1,3-Dicarboxylic Acid (9Ci) is a versatile dicarboxylic acid derivative of cyclopentadiene, serving as a valuable bifunctional building block in advanced organic synthesis. Its unique fused-ring structure with two carboxylic acid groups makes it a critical precursor for constructing complex molecular architectures, particularly in the development of specialty polymers and functional materials. This compound is essential for R&D and production chemists in the pharmaceutical, agrochemical, and advanced materials sectors seeking to introduce rigid, functionalized cores into their target molecules.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and drug candidates, particularly those requiring a rigid, bicyclic scaffold.
• Agrochemical Synthesis: Serves as a key precursor for developing novel herbicides, fungicides, and insecticides with enhanced stability and activity.
• Polymer & Resin Chemistry: Acts as a monomer or cross-linking agent for producing high-performance polymers, epoxy resins, and polyimides with improved thermal and mechanical properties.
• Ligand & Catalyst Development: Utilized to create novel chelating ligands for metal-organic frameworks (MOFs) and homogeneous catalysis.
• Organic Electronic Materials: A building block for π-conjugated systems used in organic light-emitting diodes (OLEDs) and semiconductors.
• Academic & Industrial R&D: Employed in research laboratories for methodological studies and the development of new synthetic pathways.

Basic Information

Item	Details
Product Name	1,3-Cyclopentadiene-1,3-Dicarboxylic Acid (9Ci)
CAS No.	130708-70-2
Molecular Formula	C7H6O4
Molecular Weight	154.12 g/mol
Synonyms	1,3-Cyclopentadiene-1,3-dicarboxylic acid; Cyclopentadiene-1,3-dicarboxylic acid; 1H-Cyclopenta[c]furan-1,3(3aH,6aH)-dione; 3a,6a-Dihydro-1H-cyclopenta[c]furan-1,3-dione; NSC 339063; 1,3-Dicarboxycyclopentadiene
EINECS	Contact for details

Quality Control

Our 1,3-Cyclopentadiene-1,3-Dicarboxylic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and FTIR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.1%

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