Description

Cyclopentanecarboxylic Acid, 2-Ethyl-4-Oxo-, cis- (9Ci) is a specialized chiral building block featuring a cyclopentane ring fused with a keto and a carboxylic acid functional group. This compound matters as a high-value intermediate for synthesizing complex molecules, particularly in the pharmaceutical sector where its defined stereochemistry is critical for biological activity. It is needed by research and development chemists and process development teams in the pharmaceutical, agrochemical, and advanced material industries.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of active pharmaceutical ingredients (APIs), especially in prostaglandin and steroid analog development.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides where specific stereochemistry influences efficacy.
• Fine Chemical Production: Serves as a precursor for various specialty chemicals, flavors, and fragrances requiring the cis-cyclopentane backbone.
• Academic & Industrial Research: A valuable compound for methodological studies in asymmetric synthesis and catalysis.
• Material Science: Potential monomer or modifier in the development of specialized polymers with unique thermal or mechanical properties.

Basic Information

Product Name	Cyclopentanecarboxylic Acid, 2-Ethyl-4-Oxo-, cis- (9Ci)
CAS No.	147514-23-6
Molecular Formula	C8H12O3
Molecular Weight	156.18 g/mol
Synonyms	cis-2-Ethyl-4-oxocyclopentanecarboxylic Acid; (1S,2R)-2-Ethyl-4-oxocyclopentanecarboxylic Acid; 2-Ethyl-4-oxocyclopentane-1-carboxylic acid, cis-; 147514-23-6; 2-Ethyl-4-oxocyclopentanecarboxylic acid; 4-Oxo-2-ethylcyclopentanecarboxylic acid
EINECS	Contact for details

Quality Control

Our Cyclopentanecarboxylic Acid, 2-Ethyl-4-Oxo-, cis- (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis by HPLC, to ensure it meets the high standards required for advanced synthetic applications. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are available upon request to support your regulatory and R&D documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere to prevent degradation from moisture and oxidation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (Chiral HPLC)	≥ 99.0% ee (cis- isomer)
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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