Description

4-Methyl-1-oxaspiro[5.5]undecene is a specialized spirocyclic ether compound with a unique bridged-ring structure. This molecular architecture makes it a valuable intermediate and building block in advanced organic synthesis, particularly for creating complex fragrance molecules and bioactive compounds. It is primarily sought by fine chemical manufacturers and R&D laboratories in the fragrance, flavor, and pharmaceutical sectors for its ability to impart specific olfactory characteristics and structural complexity.

Application

• Fragrance & Flavor Intermediate: A key building block for synthesizing novel musk compounds and other complex aroma chemicals.
• Pharmaceutical Research: Used as a sophisticated scaffold or intermediate in the development of new active pharmaceutical ingredients (APIs).
• Organic Synthesis: Serves as a versatile spirocyclic precursor for creating complex natural product analogs and other specialty chemicals.
• Agrochemical Development: Potential intermediate in the synthesis of advanced crop protection agents with specific activity profiles.
• Material Science: Investigated as a monomer or additive for creating polymers with unique physical properties.

Basic Information

Product Name	4-Methyl-1-oxaspiro[5.5]undecene
CAS No.	68228-06-8
Molecular Formula	C11H18O
Molecular Weight	166.26 g/mol
Synonyms	4-Methyl-1-oxaspiro[5.5]undec-3-ene; 4-Methyl-1-oxaspiro(5.5)undec-3-ene; 1-Oxaspiro[5.5]undec-3-ene, 4-methyl-; Spirocyclic ether intermediate; Musk intermediate; 4-Methylspiro[5.5]undec-3-en-1-one (tautomer reference)
EINECS	Contact for details

Quality Control

Our production of 4-Methyl-1-oxaspiro[5.5]undecene adheres to stringent internal quality standards to ensure batch-to-batch consistency and high purity. Each lot is characterized using advanced analytical techniques including GC, GC-MS, and NMR to confirm identity and purity. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment. We support custom synthesis and can tailor purity grades to meet specific project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This compound is light-sensitive and easily oxidized; for long-term storage, consider filling the headspace with an inert gas such as nitrogen or argon to maintain stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0% (Typical 97-99%)
Water Content (KF)	≤ 0.5%

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