Description

7,9,11-Trimethyl-2,4-Dioxaspiro[5.5]Undecane is a specialized spirocyclic acetal compound with a unique molecular architecture. This structure makes it a valuable intermediate and building block in advanced organic synthesis, particularly for creating complex fragrance molecules and functional materials. It is primarily sought by R&D chemists and production specialists in the flavor & fragrance, pharmaceutical, and fine chemical industries for its ability to impart specific olfactory characteristics and serve as a key synthon.

Application

• Fragrance & Flavor Intermediate: A key building block for the synthesis of sophisticated musk and woody amber fragrance compounds.
• Pharmaceutical Synthesis: Serves as a versatile spirocyclic scaffold or protecting group in the research and development of novel active pharmaceutical ingredients (APIs).
• Fine Chemical Production: Used as a high-value intermediate in the manufacture of specialty chemicals, agrochemicals, and performance materials.
• Organic Synthesis Research: Employed in academic and industrial R&D for studying cyclization reactions and constructing complex molecular frameworks.
• Functional Material Precursor: Potential use in the development of polymers or additives with specific release or stability properties.

Basic Information

Item	Detail
Product Name	7,9,11-Trimethyl-2,4-Dioxaspiro[5.5]Undecane
CAS No.	69745-75-1
Molecular Formula	C12H22O2
Molecular Weight	198.30 g/mol
Synonyms	2,4-Dioxaspiro[5.5]undecane, 7,9,11-trimethyl-; 7,9,11-Trimethyl-2,4-dioxaspiro[5.5]undecane; Trimethyl dioxaspiro undecane; Spirocyclic acetal C12; Musk intermediate spiroacetal; Ambrettolide precursor; (Potential trade names may vary)
EINECS	Contact for details

Quality Control

Every batch of 7,9,11-Trimethyl-2,4-Dioxaspiro[5.5]Undecane is produced and tested under a strict quality management system. We ensure compliance with relevant industry standards for fine chemicals and intermediates. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee consistent quality and traceability for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from strong acids and incompatible organic solvents. Recommended storage temperature is 2-25°C. Keep container tightly sealed when not in use to maintain purity and prevent contamination.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.460 - 1.470
Specific Gravity (20/4°C)	0.980 - 1.010

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