Description

5-Cyclononyn-1-One is a specialized cyclic alkyne ketone, a high-value intermediate in advanced organic synthesis. This compound matters for its unique structural motif, which enables the construction of complex, strained ring systems and serves as a key precursor in pharmaceutical and material science research. It is needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key building block for the synthesis of novel drug candidates, particularly those requiring strained carbocyclic frameworks.
• Agrochemical Research: Used in developing new active ingredients with unique modes of action for crop protection.
• Material Science: Serves as a precursor for advanced polymers and specialty chemicals with tailored properties.
• Academic & Industrial R&D: A valuable reagent in methodology development and total synthesis of complex natural products.
• Ligand Synthesis: Used in the preparation of specialized ligands for catalysis and coordination chemistry.
• Cross-Coupling Reactions: Acts as an alkyne component in Sonogashira and other metal-catalyzed coupling reactions.

Basic Information

Product Name	5-Cyclononyn-1-One
CAS No.	52920-58-8
Molecular Formula	C9H12O
Molecular Weight	136.19 g/mol
Synonyms	Cyclonon-5-yn-1-one; 5-Cyclononynone; 1-Cyclononyn-5-one; 5-Cyclononyne-1-one; Cyclononyne-5-one; 5-Cyclononyn-1-one; 5-Oxocyclononyne
EINECS	Contact for details

Quality Control

Our 5-Cyclononyn-1-One is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including chromatography (HPLC/GC) and spectroscopic methods (NMR, IR), to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, well-ventilated area at 2-8°C for long-term stability. Due to its sensitivity to light and oxidation, minimize exposure to air and light during handling.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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