Description

Cyclopentylacetic Acid Vinyl Ester CAS NO 45955-66-6 is a specialized organic ester building block used in advanced chemical synthesis. This compound is valued for its unique cyclopentyl structure, which imparts specific steric and electronic properties to downstream products. It is primarily utilized by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries for the development of novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring a cyclopentyl moiety for biological activity or metabolic stability.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators where the ester functionality allows for further chemical modifications.
• Specialty Polymer Monomer: Serves as a reactive monomer or co-monomer for creating polymers with tailored properties such as specific solubility, flexibility, or degradation profiles.
• Fine Chemical Production: Employed in multi-step organic synthesis for creating complex molecules in flavors, fragrances, and electronic chemicals.
• Crosslinking Agent: The vinyl ester group can participate in polymerization reactions, making it useful as a crosslinker in resin and coating formulations.
• Chemical Research (R&D): A valuable reagent for academic and industrial research exploring new synthetic methodologies and compound libraries.

Basic Information

Product Name	Cyclopentylacetic Acid Vinyl Ester
CAS No.	45955-66-6
Molecular Formula	C9H14O2
Molecular Weight	154.21 g/mol
Synonyms	Vinyl Cyclopentylacetate; Cyclopentaneacetic Acid Vinyl Ester; 2-Cyclopentylacetic Acid Vinyl Ester; Vinyl 2-Cyclopentylacetate; Cyclopentyl Acetic Acid Vinyl Ester; Acetic Acid, Cyclopentyl-, Vinyl Ester; (Cyclopentylmethyl)acetic Acid Vinyl Ester
EINECS	Contact for details

Quality Control

Our Cyclopentylacetic Acid Vinyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography (GC/HPLC) and spectroscopic methods, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical quality parameters are provided with every shipment. We support cGMP and ISO standards for pharmaceutical and industrial applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its nature as a strong acid/organic solvent, it should be stored separately from bases, oxidizing agents, and incompatible materials. Ensure containers are kept tightly sealed to prevent moisture ingress and volatilization.

Specification

Item	Specification
Appearance	Clear, Colorless to Pale Yellow Liquid
Identification (IR)	Conforms to Structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Specific Gravity (20°C)	0.980 - 1.020
Refractive Index (20°C)	1.440 - 1.460

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