Description

Ethanone, 1-[2-Methyl-5-(1-Methylethenyl)-1-Cyclopenten-1-Yl]-, (S)- (9Ci) is a high-purity, optically active ketone derivative with a distinctive cyclopentenyl structure. This compound serves as a valuable chiral intermediate and building block in advanced organic synthesis, where its stereochemistry and functional groups enable precise molecular construction. It is primarily sought by research and development laboratories, as well as production facilities, in the pharmaceutical, agrochemical, and specialty fragrance industries for the synthesis of complex, biologically active molecules.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of novel active pharmaceutical ingredients (APIs), particularly in stereoselective synthesis.
• Agrochemical Synthesis: Used in the production of advanced crop protection agents and pesticides where specific stereochemistry is required for efficacy.
• Fragrance & Flavor Ingredient: Serves as a precursor for synthesizing unique terpenoid-based aroma chemicals and flavor compounds.
• Organic Synthesis Building Block: Employed in academic and industrial R&D for constructing complex natural products and specialty chemicals.
• Material Science Research: Potential monomer or modifier in the development of specialized polymers with tailored properties.

Basic Information

Product Name	Ethanone, 1-[2-Methyl-5-(1-Methylethenyl)-1-Cyclopenten-1-Yl]-, (S)- (9Ci)
CAS No.	117152-34-8
Molecular Formula	C12H18O
Molecular Weight	178.27 g/mol
Synonyms	(S)-1-[2-Methyl-5-(1-Methylethenyl)-1-cyclopenten-1-yl]ethanone; (S)-1-[2-Methyl-5-(prop-1-en-2-yl)cyclopent-1-en-1-yl]ethanone; (S)-1-(2-Methyl-5-isopropenylcyclopent-1-en-1-yl)ethanone; (S)-1-(2-Methyl-5-(prop-1-en-2-yl)cyclopent-1-en-1-yl)ethan-1-one; (S)-1-(2-Methyl-5-isopropenyl-1-cyclopenten-1-yl)ethanone; (S)-2-Methyl-5-isopropenyl-1-cyclopenten-1-yl methyl ketone; (S)-CAS 117152-34-8; (S)-Enantiomer of a terpenoid ketone.
EINECS	Contact for details

Quality Control

Our Ethanone, 1-[2-Methyl-5-(1-Methylethenyl)-1-Cyclopenten-1-Yl]-, (S)- (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis, to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

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). Due to its properties of being easily oxidized (store under inert atmosphere) and highly volatile, containers must be kept tightly sealed when not in use and stored away from heat and ignition sources.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0%
Chiral Purity (Chiral HPLC)	≥ 98.0% ee (S-enantiomer)
Water Content (KF)	≤ 0.5%

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