Description

Cyclopentanecarbonyl Chloride, 1-Methyl- (8Ci,9Ci) CAS NO 20023-50-1 is a versatile and reactive acyl chloride derivative of a substituted cyclopentane. This compound serves as a critical high-purity building block in advanced organic synthesis, enabling the introduction of the 1-methylcyclopentanecarbonyl moiety. It is primarily sought after by pharmaceutical R&D and fine chemical manufacturers for the production of active pharmaceutical ingredients (APIs), agrochemicals, and specialty materials.

Application

• Pharmaceutical Intermediate: Key building block for synthesizing novel drug candidates, particularly in medicinal chemistry programs targeting complex carbocyclic structures.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides where the cyclopentane ring system confers specific biological activity.
• Polymer Chemistry: Acts as a monomer or modifying agent for creating specialty polymers with tailored thermal and mechanical properties.
• Ligand and Catalyst Development: Employed in the synthesis of sophisticated ligands for asymmetric catalysis and organometallic complexes.
• Material Science Research: Utilized in the development of organic electronic materials, liquid crystals, and other functional materials.
• Custom Synthesis and Contract Manufacturing: A valuable reagent for custom synthesis houses serving the pharmaceutical and biotechnology industries.

Basic Information

Product Name	Cyclopentanecarbonyl Chloride, 1-Methyl- (8Ci,9Ci)
CAS No.	20023-50-1
Molecular Formula	C7H11ClO
Molecular Weight	146.62 g/mol
Synonyms	1-Methylcyclopentanecarbonyl chloride; 1-Methylcyclopentane-1-carbonyl chloride; 1-Methylcyclopentanoyl chloride; (1-Methylcyclopentyl)carbonyl chloride; 1-Methyl-1-cyclopentanecarbonyl chloride; Cyclopentanecarbonyl chloride, 1-methyl-; α-Methylcyclopentanecarbonyl chloride
EINECS	Contact for details

Quality Control

Our Cyclopentanecarbonyl Chloride, 1-Methyl- is produced under stringent quality management systems. Every batch undergoes comprehensive analytical testing including GC/HPLC, NMR, and IR spectroscopy to ensure identity, purity, and consistency. We provide full traceability and Certificates of Analysis (COA) are available for all shipments, detailing purity and impurity profiles to meet the exacting standards of pharmaceutical and fine chemical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and reacts vigorously with water, alcohols, and strong bases. Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation from moisture and ensure maximum shelf life.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/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.