Description

9-Methyl-1-Oxaspiro[5.5]Undecan-2-One is a high-purity, specialized spirocyclic lactone compound of significant interest in advanced organic synthesis. Its unique bridged bicyclic structure makes it a valuable and versatile chiral building block for constructing complex molecular architectures. This intermediate is primarily sought by R&D and production chemists in the pharmaceutical, agrochemical, and fragrance industries for the development of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and synthesis of novel drug candidates, particularly those requiring complex spirocyclic or bridged ring systems.
• Agrochemical Synthesis: Used in the development of advanced pesticides and herbicides, where its structural motif can contribute to unique biological activity.
• Fragrance & Flavor Chemistry: Serves as a precursor for musky or woody odorants and specialty flavor compounds due to its macrocyclic lactone-related structure.
• Organic Synthesis Building Block: Employed in academic and industrial research for methodological studies, including ring-opening reactions, asymmetric synthesis, and catalyst testing.
• Material Science Research: Investigated as a monomer or precursor for specialized polymers with potential applications in advanced materials.

Basic Information

Product Name	9-Methyl-1-Oxaspiro[5.5]Undecan-2-One
CAS No.	94291-43-7
Molecular Formula	C11H18O2
Molecular Weight	182.26 g/mol
Synonyms	9-Methyl-1-oxaspiro[5.5]undecan-2-one; 1-Oxaspiro[5.5]undecan-2-one, 9-methyl-; 9-Methyl-1-oxaspiro(5.5)undecane-2-one; 9-Methyl-1-oxa-spiro[5.5]undecan-2-one; Spirocyclic lactone derivative; 9-Methyl lactone spiro[5.5]undecane
EINECS	Contact for details

Quality Control

Our 9-Methyl-1-Oxaspiro[5.5]Undecan-2-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography (HPLC, GC) and spectroscopic methods (NMR, IR), to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all specified parameters. Our quality commitment supports applications requiring high-purity intermediates under cGMP or ISO 9001 guidelines where applicable.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and heat sources. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to reference spectrum
Identification (NMR)	Conforms to structure
Purity (HPLC/GC)	≥ 97.0% (Standard Grade)
Melting Point	Contact for details
Loss on Drying	≤ 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.