Description

Ethanone, 1-[(5S)-5-Methyl-1-Cyclopenten-1-Yl]- (9Ci) CAS NO 243672-16-4 is a high-purity, chiral ketone derivative featuring a cyclopentenyl moiety. This compound is valued for its role as a versatile chiral building block and intermediate in advanced organic synthesis. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty fragrance industries for constructing complex, optically active molecules.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of active pharmaceutical ingredients (APIs), particularly in the development of prostaglandin analogs and other bioactive molecules.
• Agrochemical Synthesis: Used in the research and production of advanced, stereospecific pesticides and herbicides.
• Fine Chemical Production: Serves as a critical starting material for the manufacture of complex specialty chemicals requiring specific stereochemistry.
• Fragrance & Flavor Ingredient: Acts as a precursor for high-value aroma chemicals, leveraging its unique cyclic structure.
• Academic & Industrial Research: Employed in methodological studies and the development of novel asymmetric synthesis routes.
• Material Science: Potential intermediate for creating specialized polymers or liquid crystals with tailored properties.

Basic Information

Item	Details
Product Name	Ethanone, 1-[(5S)-5-Methyl-1-Cyclopenten-1-Yl]- (9Ci)
CAS No.	243672-16-4
Molecular Formula	C8H12O
Molecular Weight	124.18 g/mol
Synonyms	(5S)-5-Methyl-1-cyclopenten-1-yl methyl ketone; 1-[(5S)-5-Methyl-1-cyclopenten-1-yl]ethanone; (S)-5-Methyl-1-cyclopenten-1-yl methyl ketone; (S)-1-(5-Methylcyclopent-1-en-1-yl)ethanone; Chiral Cyclopentenyl Methyl Ketone; (5S)-5-Methylcyclopent-1-en-1-yl methyl ketone
EINECS	Contact for details

Quality Control

Our Ethanone, 1-[(5S)-5-Methyl-1-Cyclopenten-1-Yl]- (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis by GC or HPLC, to ensure compliance with exacting R&D and process chemistry standards. Certificates of Analysis (COA) detailing identity, purity, and enantiomeric excess are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended long-term storage temperature is 2-8°C. This material is easily oxidized (store under inert atmosphere).

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0%
Enantiomeric Excess (Chiral GC/HPLC)	≥ 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.