Description

[S,(-)]-1,2-Cyclononadiene is a chiral, non-conjugated cyclic diene of significant interest in advanced organic synthesis and materials science. Its unique strained-ring structure and defined stereochemistry make it a valuable building block for constructing complex, three-dimensional molecular architectures. This high-purity intermediate is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors seeking to develop novel active ingredients and functional materials.

Application

• Chiral Ligand & Catalyst Synthesis: Serves as a key precursor for developing novel, stereoselective ligands and organometallic catalysts used in asymmetric synthesis.
• Pharmaceutical Intermediate: Employed in the research and development of chiral active pharmaceutical ingredients (APIs), particularly for constructing complex carbocyclic and heterocyclic ring systems.
• Advanced Material Research: Used in the synthesis of specialty polymers and dendrimers with unique optical or electronic properties due to its reactive diene functionality.
• Agrochemical Development: Acts as a building block for creating novel, stereochemically defined bioactive compounds for crop protection.
• Methodology Development in Organic Chemistry: A valuable substrate for studying new cycloaddition reactions, ring-opening metathesis polymerization (ROMP), and other transition metal-catalyzed transformations.
• Fragrance & Flavor Chemistry: Potential intermediate for synthesizing specific macrocyclic musk or flavor compounds, leveraging its nine-membered ring structure.

Basic Information

Product Name	[S,(-)]-1,2-Cyclononadiene
CAS No.	18526-52-8
Molecular Formula	C9H14
Molecular Weight	122.21 g/mol
Synonyms	(1S)-1,2-Cyclononadiene; (-)-1,2-Cyclononadiene; (S)-1,2-Cyclononadiene; (S)-Cyclonona-1,2-diene; 1,2-Cyclononadiene, (S)-; (S)-(–)-1,2-Cyclononadiene; Cyclonona-1,2-diene, (S)-
EINECS	Contact for details

Quality Control

Our [S,(-)]-1,2-Cyclononadiene is produced under strict quality management systems to ensure batch-to-batch consistency and high purity for research and development applications. Each lot undergoes comprehensive analytical characterization, including chiral purity assessment by chiral GC or HPLC, to confirm its stereochemical integrity. A detailed Certificate of Analysis (COA) providing specifications for identity, purity, and relevant impurities is supplied with every shipment.

Storage

Preserve in a tightly closed container, protected from light. For long-term stability, store under an inert atmosphere (e.g., nitrogen or argon) at recommended temperatures between 2°C and 8°C (refrigerated) or as specified on the label. This compound is easily oxidized and light-sensitive; prolonged exposure to air, light, or elevated temperatures should be avoided to maintain purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0%
Chiral Purity (Chiral GC/HPLC)	≥ 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.