Description

(2S,5E)-5-Methyl-9-Methylene-2-Isopropyl-5-Cyclodecen-1-One is a high-purity, specialized monocyclic sesquiterpene derivative with a distinct molecular architecture. This compound is valued for its role as a versatile chiral building block and a key intermediate in the synthesis of complex fragrance molecules and biologically active compounds. It is primarily sought by R&D chemists and process developers in the flavor & fragrance, pharmaceutical, and fine chemical industries for creating novel scent profiles and advanced synthetic pathways.

Application

• Fragrance & Flavor Intermediate: A crucial chiral precursor for the synthesis of sophisticated woody, amber, and musk odorants in high-end perfumery.
• Pharmaceutical Research: Serves as a key chiral synthon in the development of novel therapeutic agents, particularly in medicinal chemistry programs targeting complex natural product analogs.
• Fine Chemical Synthesis: Used as a specialized building block for constructing complex macrocyclic and polycyclic structures in advanced organic synthesis.
• Agrochemical Intermediates: Potential application in the synthesis of chiral active ingredients for crop protection products.
• Academic & Industrial R&D: Employed in methodological studies and process development for asymmetric synthesis and catalysis.
• Specialty Polymer Modifiers: Can be investigated for introducing specific functional groups into polymer backbones to modify properties.

Basic Information

Product Name	(2S,5E)-5-Methyl-9-Methylene-2-Isopropyl-5-Cyclodecen-1-One
CAS No.	25645-19-6
Molecular Formula	C15H24O
Molecular Weight	220.35 g/mol
Synonyms	5-Methyl-9-methylene-2-(1-methylethyl)-5-cyclodecen-1-one, (S,E)-5-Methyl-9-methylene-2-isopropyl-5-cyclodecen-1-one; 2-Isopropyl-5-methyl-9-methylene-5-cyclodecen-1-one; (-)-α-Gurjunene epoxide derivative; Sesquiterpene ketone intermediate.
EINECS	Contact for details

Quality Control

Our (2S,5E)-5-Methyl-9-Methylene-2-Isopropyl-5-Cyclodecen-1-One is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity assessment by GC or HPLC, to ensure high chemical and isomeric purity suitable for demanding synthetic applications. A detailed Certificate of Analysis (COA) providing specifications for identity, assay, and impurity profile is supplied with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at controlled room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. 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
Assay (GC/HPLC)	≥ 97.0%
Chiral Purity (Chiral GC/HPLC)	≥ 98.0% ee
Specific Rotation [α]	Contact for details
Refractive Index (n20D)	Contact for details
Density (g/mL)	Contact for details

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