Description

Cyclopentanecarboxylic Acid, 1-(Chlorocarbonyl)-, Ethyl Ester (9Ci) is a versatile and reactive bifunctional organic intermediate, serving as a critical building block in advanced chemical synthesis. Its molecular structure, featuring both an acid chloride and an ester group, makes it invaluable for constructing complex molecular architectures with high precision. This compound is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds containing cyclopentane or proline-like structures.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators requiring specific cyclic frameworks.
• Polymer Chemistry: Serves as a monomer or cross-linking agent for producing specialty polymers with tailored thermal and mechanical properties.
• Ligand and Catalyst Development: Employed in the creation of novel chiral ligands and organocatalysts for asymmetric synthesis.
• Peptidomimetics Research: A valuable scaffold for designing and synthesizing peptide analogs and conformationally restricted biomolecules.
• Material Science: Used in the surface functionalization of nanomaterials and the synthesis of advanced organic electronic materials.

Basic Information

Product Name	Cyclopentanecarboxylic Acid, 1-(Chlorocarbonyl)-, Ethyl Ester (9Ci)
CAS No.	76910-12-8
Molecular Formula	C9H13ClO3
Molecular Weight	204.65 g/mol
Synonyms	1-(Chlorocarbonyl)cyclopentanecarboxylic Acid Ethyl Ester; Ethyl 1-(Chlorocarbonyl)cyclopentanecarboxylate; Cyclopentanecarbonyl chloride, 1-carbethoxy-; 1-Carbethoxycyclopentanecarbonyl Chloride; Ethyl 1-(Chlorocarbonyl)cyclopentane-1-carboxylate; 1-(Ethoxycarbonyl)cyclopentanecarbonyl Chloride
EINECS	Contact for details

Quality Control

Our Cyclopentanecarboxylic Acid, 1-(Chlorocarbonyl)-, Ethyl Ester (9Ci) is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including chromatography (HPLC/GC) and spectroscopy (IR, NMR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at 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.