Description

Cyclopentanecarboxylic Acid, 3-(Chlorocarbonyl)-, Methyl Ester (9Ci) is a versatile and reactive organic building block, specifically a cyclopentane derivative functionalized with both a carboxylic acid methyl ester and an acid chloride group. This unique bifunctional structure makes it a critical intermediate for synthesizing complex molecules in advanced research and industrial chemistry. It is primarily sought after by pharmaceutical, agrochemical, and specialty chemical manufacturers for constructing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, particularly those containing cyclopentane or proline-like scaffolds.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where the cyclopentane ring contributes to specific biological activity.
• Polymer Chemistry: Serves as a monomer or cross-linking agent for creating specialty polymers with tailored thermal or mechanical properties.
• Ligand and Catalyst Development: Employed in the preparation of chiral ligands and organometallic catalysts for asymmetric synthesis.
• Organic Synthesis Reagent: Utilized in academic and industrial R&D for constructing complex natural products and fine chemicals via its reactive acid chloride functionality.
• Material Science Research: A precursor for advanced organic materials, including liquid crystals and organic semiconductors.

Basic Information

Item	Details
Product Name	Cyclopentanecarboxylic Acid, 3-(Chlorocarbonyl)-, Methyl Ester (9Ci)
CAS No.	85174-63-6
Molecular Formula	C8H11ClO3
Molecular Weight	190.62 g/mol
Synonyms	3-(Chlorocarbonyl)cyclopentanecarboxylic acid methyl ester; Methyl 3-(chlorocarbonyl)cyclopentanecarboxylate; 3-Carbomethoxycyclopentanecarbonyl chloride; Cyclopentanecarbonyl chloride, 3-(methoxycarbonyl)-; 3-Methoxycarbonylcyclopentanecarbonyl chloride
EINECS	Contact for details

Quality Control

Our production of Cyclopentanecarboxylic Acid, 3-(Chlorocarbonyl)-, Methyl Ester adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including chromatography (HPLC/GC) and spectroscopic methods (IR, NMR), to ensure high purity and consistency. A Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment, ensuring full traceability and compliance with your research or production specifications.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, strong oxidizing agents, and alcohols.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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