Description

1-Cyclopentene-1-Carbonyl Chloride is a highly reactive, versatile acid chloride derivative of cyclopentene carboxylic acid. This compound serves as a critical building block in advanced organic synthesis, enabling the efficient introduction of the cyclopentenyl carbonyl moiety. It is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to create novel molecular architectures.

Application

• Pharmaceutical Intermediates: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds containing five-membered carbocyclic structures.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators that require the cyclopentene pharmacophore.
• Polymer Chemistry: Acts as a monomer or cross-linking agent for producing specialty polymers with unique thermal and mechanical properties.
• Material Science Research: Employed in the creation of advanced organic materials, including liquid crystals and organic semiconductors.
• Peptide Mimetics & Bioconjugation: Useful reagent for modifying peptides or creating stable amide bonds in bioconjugation chemistry under mild conditions.
• Catalyst & Ligand Development: Serves as a starting material for synthesizing novel chiral ligands and organometallic catalysts.

Basic Information

Product Name	1-Cyclopentene-1-Carbonyl Chloride
CAS No.	59253-90-6
Molecular Formula	C6H7ClO
Molecular Weight	130.57 g/mol
Synonyms	Cyclopent-1-ene-1-carbonyl chloride; 1-Cyclopentenecarbonyl chloride; Cyclopentene-1-carbonyl chloride; 1-Cyclopentenoyl chloride; (Cyclopent-1-en-1-yl)carbonyl chloride; 1-Carboxycyclopentene chloride; 1-Cyclopentenecarboxylic acid chloride
EINECS	Contact for details

Quality Control

Every batch of 1-Cyclopentene-1-Carbonyl Chloride is manufactured and tested under strict quality management systems. We ensure compliance with relevant industry standards for fine chemicals and pharmaceutical intermediates. Comprehensive analytical testing, including GC, HPLC, and NMR, is performed to guarantee identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided with each shipment.

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, strong bases, and alcohols. Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to maintain stability and prevent hydrolysis.

Specification

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