Description

Cyclopentanecarbonyl Chloride, 1-Chloro-2-Oxo- (9Ci) is a highly reactive acid chloride derivative of cyclopentane, serving as a critical building block in advanced organic synthesis. Its value lies in its ability to efficiently introduce the cyclopentanecarbonyl moiety, enabling the construction of complex molecular architectures. This compound is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries, where it is used to create novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key synthon for the production of active pharmaceutical ingredients (APIs), particularly those containing fused or spiro-cyclic systems.
• Agrochemical Synthesis: Used in the manufacture of herbicides, fungicides, and plant growth regulators that require the cyclopentane ring structure.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the synthesis of specialty polymers with tailored thermal and mechanical properties.
• Ligand and Catalyst Development: Serves as a precursor for creating novel ligands and organometallic catalysts used in asymmetric synthesis.
• Material Science Research: Employed in the development of advanced organic materials, including liquid crystals and organic semiconductors.
• Custom Synthesis and Contract Manufacturing: A vital reagent for fine chemical companies offering bespoke synthesis services for client-specific molecules.

Basic Information

Product Name	Cyclopentanecarbonyl Chloride, 1-Chloro-2-Oxo- (9Ci)
CAS No.	56447-18-8
Molecular Formula	C6H7ClO2
Molecular Weight	146.57 g/mol
Synonyms	1-Chloro-2-oxocyclopentanecarbonyl chloride; 2-Oxo-1-chlorocyclopentanecarbonyl chloride; Cyclopentanecarbonyl chloride, 1-chloro-2-oxo-; 1-Chlorocyclopentane-1,2-dicarbonyl chloride; 2-Oxocyclopentanecarbonyl chloride, 1-chloro derivative; NSC 163082
EINECS	Contact for details

Quality Control

Our Cyclopentanecarbonyl Chloride is manufactured under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatography and spectroscopic methods, to verify identity and assay. A Certificate of Analysis (COA) detailing all quality parameters is provided with every shipment. We support compliance with cGMP and ISO 9001 standards for industrial and research applications.

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 and moisture-sensitive nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening. Keep away from strong bases, oxidizing agents, and sources of ignition.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Density (at 20°C)	~1.30 g/cm³

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