Description

Ethanone, 1-[3-(1,1-Dimethylethyl)Cyclopentyl]-, trans- (9Ci) is a specialized organic ketone compound featuring a unique sterically hindered cyclopentyl structure with a tert-butyl substituent. This molecular architecture makes it a valuable high-purity intermediate for advanced organic synthesis, particularly in the development of complex molecules where stereochemistry and steric control are critical. It is primarily sought by pharmaceutical R&D and fine chemical sectors for constructing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key chiral building block for the synthesis of novel active pharmaceutical ingredients (APIs), especially in therapeutic areas requiring complex, three-dimensional molecular scaffolds.
• Agrochemical Synthesis: Used in the research and development of advanced pesticides and herbicides, where the tert-butylcyclopentyl moiety can influence biological activity and environmental stability.
• Fragrance & Flavor Chemistry: Serves as a precursor for synthesizing unique musk-like or woody aroma chemicals, leveraging its hindered cyclic structure.
• Material Science Research: Acts as a monomer or functionalization agent in the development of specialty polymers with tailored thermal or mechanical properties.
• Organic Synthesis Reagent: Employed in academic and industrial research for methodological studies, such as asymmetric synthesis and cross-coupling reactions involving sterically demanding ketones.
• Ligand & Catalyst Development: Utilized as a backbone for creating novel chiral ligands and organocatalysts used in enantioselective transformations.

Basic Information

Product Name	Ethanone, 1-[3-(1,1-Dimethylethyl)Cyclopentyl]-, trans- (9Ci)
CAS No.	145930-11-6
Molecular Formula	C11H20O
Molecular Weight	168.28 g/mol
Synonyms	trans-1-(3-tert-Butylcyclopentyl)ethanone; 1-(3-tert-Butylcyclopentyl)ethan-1-one; 3-tert-Butylcyclopentyl methyl ketone; trans-3-tert-Butyl-1-acetylcyclopentane; 1-Acetyl-3-tert-butylcyclopentane (trans-); 145930-11-6; tert-Butylcyclopentyl methyl ketone
EINECS	Contact for details

Quality Control

Our Ethanone, 1-[3-(1,1-Dimethylethyl)Cyclopentyl]-, trans- (9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR analysis, to ensure identity, purity, and stereochemical integrity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical specifications. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates, ensuring traceability and consistency for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0% (trans-isomer)
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Specific Rotation (if applicable)	Contact for details

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