Description

Cyclopentanecarboxylic Acid, 1-(Ethenyloxy)-2-Oxo-, Ethyl Ester (9Ci) is a specialized organic ester compound with a complex cyclic structure, serving as a high-value chemical intermediate. This compound matters for its role in facilitating complex organic syntheses, particularly in the development of advanced pharmaceutical molecules and fine chemicals. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and advanced material sectors seeking to build novel molecular architectures. Its specific structure offers unique reactivity for constructing complex, functionalized ring systems.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those containing complex cyclopentane or lactone motifs.
• Agrochemical Synthesis: Used in the research and development of advanced pesticides and herbicides, where its functional groups allow for the introduction of specific biological activity.
• Fine Chemical Production: Employed as a precursor in the manufacture of specialty chemicals, including fragrances, flavors, and performance materials.
• Academic & Industrial Research: A valuable reagent for methodological development in organic chemistry, enabling studies on new cyclization and esterification reactions.
• Material Science: Potential monomer or cross-linking agent in the development of specialized polymers with tailored thermal or mechanical properties.

Basic Information

Product Name	Cyclopentanecarboxylic Acid, 1-(Ethenyloxy)-2-Oxo-, Ethyl Ester (9Ci)
CAS No.	503064-27-5
Molecular Formula	C10H14O4
Molecular Weight	198.22 g/mol
Synonyms	Ethyl 1-(Ethenyloxy)-2-oxocyclopentanecarboxylate; 1-(Vinyloxy)-2-oxocyclopentanecarboxylic Acid Ethyl Ester; 2-Oxo-1-(vinyloxy)cyclopentanecarboxylic acid ethyl ester; Cyclopentanecarboxylic acid, 1-(ethenyloxy)-2-oxo-, ethyl ester; Ethyl 1-vinyloxy-2-oxocyclopentanecarboxylate
EINECS	Contact for details

Quality Control

Our Cyclopentanecarboxylic Acid, 1-(Ethenyloxy)-2-Oxo-, Ethyl Ester (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the high standards required for research and industrial synthesis. Certificates of Analysis (COA) detailing specific results for purity, assay, and impurity profiles are available for every shipment upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from heat, sparks, and open flame.

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%
Any single unknown impurity	≤ 1.0%

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