Description

5-Hexen-2-One, 4-Hydroxy-5-Methyl-, (S)- (9Ci) is a chiral, unsaturated hydroxy ketone that serves as a valuable synthetic intermediate in fine chemical synthesis. Its defined stereochemistry and functional group array make it a critical building block for constructing complex molecules with high enantiomeric purity. This compound is primarily sought by research and development laboratories, as well as production facilities, in the pharmaceutical and agrochemical sectors for the synthesis of active ingredients and novel chemical entities.

Application

• Pharmaceutical Intermediate: Key chiral synthon for the synthesis of active pharmaceutical ingredients (APIs), particularly in routes requiring stereochemical control.
• Agrochemical Synthesis: Building block for developing advanced pesticides, herbicides, and plant growth regulators with specific biological activity.
• Flavor and Fragrance Industry: Potential precursor for the synthesis of complex, naturally-derived aroma compounds and flavorants.
• Academic and Industrial R&D: Used in methodological development and exploratory chemistry for new reaction pathways and catalyst testing.
• Material Science: Intermediate in the production of specialized polymers or coatings where specific functional groups are required.

Basic Information

Product Name	5-Hexen-2-One, 4-Hydroxy-5-Methyl-, (S)- (9Ci)
CAS No.	142896-45-5
Molecular Formula	C7H12O2
Molecular Weight	128.17 g/mol
Synonyms	(S)-4-Hydroxy-5-methyl-5-hexen-2-one; (S)-5-Methyl-4-hydroxy-5-hexen-2-one; 4-Hydroxy-5-methyl-5-hexen-2-one, (S)-; (S)-4-Hydroxy-5-methylhex-5-en-2-one; 5-Hexen-2-one, 4-hydroxy-5-methyl-, (S)-; (S)-HMMP (Hydroxy Methyl Methyl Pentenone); (S)-enantiomer of 4-Hydroxy-5-methyl-5-hexen-2-one
EINECS	Contact for details

Quality Control

Our 5-Hexen-2-One, 4-Hydroxy-5-Methyl-, (S)- (9Ci) is produced under strict quality management protocols to ensure batch-to-batch consistency and high chemical purity. Each lot is supported by a comprehensive Certificate of Analysis (COA) detailing key parameters such as chiral purity, chemical assay, and impurity profiles. We adhere to cGMP principles where applicable, ensuring the material meets the stringent requirements for use in regulated synthesis pathways.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Chiral Purity (Chiral HPLC)	≥ 98.0% ee
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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