Description

5-Hexen-2-One, 3,5-Dimethyl-, (S)- (9Ci) is a chiral, unsaturated ketone that serves as a valuable synthetic intermediate in advanced organic chemistry. Its defined stereochemistry and reactive alkene functionality make it a critical building block for constructing complex molecular architectures with high enantiomeric purity. This compound is essential for research and development chemists in the pharmaceutical and fine chemical industries, particularly for the synthesis of active pharmaceutical ingredients (APIs), chiral ligands, and specialty fragrances.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the asymmetric synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Fine Chemical Synthesis: Used in the preparation of specialty chemicals, advanced materials, and complex natural product analogs.
• Asymmetric Catalysis: Employed as a precursor for chiral ligands, auxiliaries, and catalysts in enantioselective transformations.
• Fragrance & Flavor Chemistry: Serves as a building block for creating specific, high-value odorant molecules.
• Academic & Industrial R&D: A versatile reagent for methodological development in organic synthesis and chemical biology research.
• Agrochemical Synthesis: Potential intermediate in the development of chiral pesticides and herbicides.

Basic Information

Product Name	5-Hexen-2-One, 3,5-Dimethyl-, (S)- (9Ci)
CAS No.	189573-83-9
Molecular Formula	C8H14O
Molecular Weight	126.20 g/mol
Synonyms	(S)-3,5-Dimethyl-5-hexen-2-one; (S)-5-Hexen-2-one, 3,5-dimethyl-; (S)-3,5-Dimethylhex-5-en-2-one; (S)-1,3-Dimethylbut-3-en-2-yl methyl ketone; (S)-3,5-Dimethyl-1-hexen-5-one-2; (S)-3,5-Dimethyl-5-hexene-2-one; (S)-3,5-Dimethylpent-4-en-2-one (tautomer consideration)
EINECS	Contact for details

Quality Control

Our 5-Hexen-2-One, 3,5-Dimethyl-, (S)- (9Ci) is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity (enantiomeric excess) determination by chiral GC or HPLC, identity confirmation by IR and NMR spectroscopy, and assay by GC. A Certificate of Analysis (COA) detailing all specifications and results is provided with every shipment to ensure traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This material is moisture-sensitive and should be kept under an inert atmosphere for long-term storage to maintain purity and prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (GC)	≥ 97.0%
Chiral Purity (Enantiomeric Excess)	≥ 98.0% ee
Water Content (KF)	≤ 0.5%

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