Description

2-Cyclopentene-1-Carboxylicacid,5-Ethyl-4-Oxo-,trans-(9Ci) is a specialized, high-purity organic compound featuring a cyclopentene core functionalized with both carboxylic acid and oxo groups. This unique structure makes it a valuable advanced intermediate for synthesizing complex molecules in pharmaceutical and agrochemical research. It is primarily sought after by R&D chemists and process development scientists working on novel active ingredients, fine chemicals, and material science applications where precise stereochemistry and functional group compatibility are critical.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly those requiring a functionalized cyclopentene scaffold.
• Agrochemical Research: Used in developing new active ingredients for crop protection products, leveraging its reactive sites for structural diversification.
• Fine Chemical Synthesis: Serves as a precursor for creating complex flavors, fragrances, and other specialty chemicals.
• Material Science: Potential monomer or cross-linking agent in the development of specialized polymers with unique thermal or mechanical properties.
• Academic & Industrial R&D: A valuable reagent for methodological studies in organic synthesis, including cycloaddition and asymmetric catalysis research.

Basic Information

Product Name	2-Cyclopentene-1-Carboxylicacid,5-Ethyl-4-Oxo-,trans-(9Ci)
CAS No.	134298-20-7
Molecular Formula	C8H10O3
Molecular Weight	154.16 g/mol
Synonyms	trans-5-Ethyl-4-oxo-2-cyclopentene-1-carboxylic acid; (1R,5S)-5-Ethyl-4-oxo-2-cyclopentene-1-carboxylic acid; 5-Ethyl-4-oxo-2-cyclopentene-1-carboxylic acid, trans-; 2-Cyclopentene-1-carboxylic acid, 5-ethyl-4-oxo-, (1R,5S)-; 134298-20-7; 5-Ethyl-4-oxocyclopent-2-ene-1-carboxylic acid
EINECS	Contact for details

Quality Control

Our production of 2-Cyclopentene-1-Carboxylicacid,5-Ethyl-4-Oxo-,trans-(9Ci) adheres to stringent internal quality standards to ensure batch-to-batch consistency and high purity for research applications. Each lot is characterized using advanced analytical techniques including HPLC, GC, NMR, and IR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles 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 at a controlled room temperature (typically 15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider inert gas purging to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 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.