Description

Cyclopentanecarboxaldehyde, 2-Ethyl-3-Oxo-, trans- (9Ci) is a specialized chiral aldehyde building block of significant interest in advanced organic synthesis. Its molecular architecture, featuring a cyclopentane ring fused with an ethyl-substituted oxo-aldehyde group, makes it a valuable precursor for constructing complex, stereodefined molecules. This compound is primarily sought by research chemists and process development scientists in the pharmaceutical and agrochemical industries for the development of novel active ingredients.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of prostaglandin analogs, steroid derivatives, and other bioactive molecules with complex ring systems.
• Agrochemical Synthesis: Used in the research and development of new generation pesticides and herbicides requiring specific stereochemistry for optimal activity.
• Asymmetric Catalysis Research: Serves as a sophisticated substrate or ligand precursor in the development of new catalytic asymmetric reactions.
• Fragrance and Flavor Chemistry: Potential use as an intermediate for creating unique musk-like or amber odorants due to its cyclopentane backbone.
• Material Science: Investigation as a monomer or cross-linking agent for specialty polymers with tailored thermal and mechanical properties.
• Academic & Contract Research: Employed in university and CRO laboratories for methodological studies in total synthesis and natural product chemistry.

Basic Information

Product Name	Cyclopentanecarboxaldehyde, 2-Ethyl-3-Oxo-, trans- (9Ci)
CAS No.	123100-98-1
Molecular Formula	C8H12O2
Molecular Weight	140.18 g/mol
Synonyms	trans-2-Ethyl-3-oxocyclopentanecarboxaldehyde; (1R,2S)-2-Ethyl-3-oxocyclopentanecarbaldehyde; 2-Ethyl-3-oxocyclopentanecarbaldehyde; 3-Oxo-2-ethylcyclopentanecarbaldehyde; 2-Ethyl-3-oxocyclopentane-1-carboxaldehyde; Cyclopentanecarboxaldehyde, 2-ethyl-3-oxo-, trans-; (1S,2R)-rel-2-Ethyl-3-oxocyclopentanecarboxaldehyde
EINECS	Contact for details

Quality Control

Our production of Cyclopentanecarboxaldehyde, 2-Ethyl-3-Oxo-, trans- (9Ci) adheres to stringent internal quality protocols to ensure batch-to-batch consistency and high chemical purity. Each lot is characterized by multiple analytical techniques including GC, HPLC, and NMR to confirm identity, isomeric purity (trans- configuration), and assay value. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

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 sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Isomeric Purity (trans-)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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