Description

2-Methylidene-5,8-Dioxaspiro[3.4]Octane is a specialized spirocyclic ether compound featuring a reactive methylidene group, making it a valuable building block in advanced organic synthesis. Its unique bridged structure is crucial for constructing complex molecular architectures with specific stereochemical and functional properties. This high-purity intermediate is primarily sought by research institutions and industrial R&D departments in the pharmaceutical and agrochemical sectors for developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a key synthon for the development of novel drug candidates, particularly in creating spirocyclic cores found in various therapeutic agents.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides, where its spiro structure can contribute to unique biological activity.
• Polymer & Material Science: Acts as a monomer or cross-linking agent for synthesizing specialty polymers with tailored thermal and mechanical properties.
• Ligand & Catalyst Development: Employed in the design of novel chelating ligands and organocatalysts for asymmetric synthesis.
• Fine Chemical Production: Utilized in the multistep synthesis of complex fragrances, flavors, and other high-value specialty chemicals.
• Academic & Industrial Research: A valuable tool for methodological studies in organic chemistry, including cycloaddition reactions and ring-opening polymerizations.

Basic Information

Product Name	2-Methylidene-5,8-Dioxaspiro[3.4]Octane
CAS No.	99620-40-3
Molecular Formula	C7H10O2
Molecular Weight	126.15 g/mol
Synonyms	5,8-Dioxaspiro[3.4]oct-2-ene, 2-Methylene-; 2-Methylene-5,8-dioxaspiro[3.4]octane; Spiro[3.4]oct-2-ene, 5,8-dioxa-2-methylene-; 2-Methylidene-5,8-dioxaspiro[3.4]octane; MDDO; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our 2-Methylidene-5,8-Dioxaspiro[3.4]Octane is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chromatography (HPLC/GC) and spectroscopy (NMR, IR), to ensure high chemical purity and identity. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are provided with every shipment to guarantee batch-to-batch consistency and support your regulatory 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 (typically 15-25°C). Keep away from heat, sparks, and open flames. For long-term storage under an inert atmosphere (e.g., nitrogen or argon), please contact our technical team for specific recommendations.

Specification

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