Description

Bicyclo[2.2.1]Hepta-2,5-Diene-2-Carboxylic Acid, 3-(Chlorocarbonyl)-, Methyl Ester (9Ci) is a high-purity, functionalized norbornadiene derivative, serving as a versatile and critical building block in advanced organic synthesis. Its unique strained bicyclic structure, combined with reactive carboxylic acid and chlorocarbonyl functionalities, makes it an indispensable precursor for creating complex molecular architectures. This compound is primarily sought after by R&D and process development teams in the pharmaceutical, agrochemical, and specialty polymer industries for applications requiring precise stereochemistry and controlled reactivity.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of complex active pharmaceutical ingredients (APIs), particularly those with bridged ring systems or requiring specific spatial orientation.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides where the norbornadiene scaffold contributes to biological activity.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the production of specialty polymers with unique thermal or mechanical properties, such as resins and advanced coatings.
• Material Science Research: Employed in the development of novel organic electronic materials, including precursors for conductive polymers or photoactive compounds.
• Catalyst Ligand Synthesis: Serves as a precursor for constructing sophisticated chiral or sterically hindered ligands used in asymmetric catalysis.
• Academic & Industrial R&D: A valuable tool for methodological development in organic chemistry, including Diels-Alder reactions and other cycloadditions.

Basic Information

Product Name	Bicyclo[2.2.1]Hepta-2,5-Diene-2-Carboxylic Acid, 3-(Chlorocarbonyl)-, Methyl Ester (9Ci)
CAS No.	174506-50-4
Molecular Formula	C10H9ClO3
Molecular Weight	212.63 g/mol
Synonyms	3-(Chlorocarbonyl)bicyclo[2.2.1]hepta-2,5-diene-2-carboxylic acid methyl ester; Methyl 3-(chlorocarbonyl)bicyclo[2.2.1]hepta-2,5-diene-2-carboxylate; 2-Norbornadiene-2-carboxylic acid, 3-(chlorocarbonyl)-, methyl ester; Bicyclo[2.2.1]hepta-2,5-diene-2-carboxylic acid, 3-(chloroformyl)-, methyl ester; Norbornadiene dicarboxylic acid monomethyl ester chloride; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Every batch of Bicyclo[2.2.1]Hepta-2,5-Diene-2-Carboxylic Acid, 3-(Chlorocarbonyl)-, Methyl Ester (9Ci) is produced and tested under a strict quality management system. We ensure high purity and batch-to-batch consistency through advanced analytical techniques including HPLC, GC, and NMR. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality and regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed and under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to prevent degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%

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