Description

1-Cyclopentene-1-Carbonyl Chloride, 5-(3-Butenyl)- (9Ci) is a specialized, high-value organic intermediate featuring a reactive acid chloride group and an unsaturated butenyl side chain. This compound matters for its role as a critical building block in the synthesis of complex molecules, enabling the introduction of the cyclopentene-carbonyl moiety into target structures. It is primarily needed by research and development chemists in the pharmaceutical and agrochemical industries for creating novel active ingredients and advanced materials.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of new drug candidates, particularly for introducing specific cyclic frameworks.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where its unique structure contributes to biological activity.
• Material Science Research: Acts as a monomer or cross-linking agent in the development of specialty polymers and functional materials.
• Organic Synthesis Building Block: Employed in academic and industrial laboratories for constructing complex natural products and fine chemicals.
• Ligand and Catalyst Development: Utilized in the preparation of novel ligands for catalytic systems in asymmetric synthesis.

Basic Information

Product Name	1-Cyclopentene-1-Carbonyl Chloride, 5-(3-Butenyl)- (9Ci)
CAS No.	118717-66-1
Molecular Formula	C10H13ClO
Molecular Weight	184.66 g/mol
Synonyms	5-(3-Buten-1-yl)-1-cyclopentene-1-carbonyl chloride; 5-(3-Butenyl)-1-cyclopentene-1-carboxylic acid chloride; 1-Cyclopentene-1-carboxylic acid, 5-(3-butenyl)-, chloride; 5-(But-3-en-1-yl)cyclopent-1-ene-1-carbonyl chloride
EINECS	Contact for details

Quality Control

Our production of 1-Cyclopentene-1-Carbonyl Chloride, 5-(3-Butenyl)- (9Ci) adheres to stringent in-process controls to ensure batch-to-batch consistency and high purity. Each lot is fully characterized and undergoes rigorous quality testing, including assay and impurity profile analysis via techniques such as GC, HPLC, and NMR. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. Due to its hygroscopic (moisture-sensitive) nature and reactivity as a strong acid/organic solvent derivative, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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