Description

4''-Methylene-7',8'-Didehydro-4'',5''-Dihydrodispiro[2H-1,5-Benzodioxepin-3(4H),2'-Bicyclo[2.2.2]Octane-5',2''(3''H)-Furan]-6'-One is a complex, high-purity spirocyclic organic compound with a unique fused ring structure that serves as a critical advanced intermediate in sophisticated chemical synthesis. Its intricate molecular architecture makes it a valuable building block for pharmaceutical research and the development of novel fine chemicals. This compound is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and advanced material sectors who require precise, high-quality intermediates to drive innovation.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for central nervous system (CNS) or complex therapeutic agents.
• Agrochemical Research: Used in the development of new generation herbicides or pesticides with specific activity profiles, leveraging its complex spirocyclic core.
• Material Science: Acts as a monomer or cross-linking agent in the research of specialty polymers and advanced organic materials with tailored properties.
• Chemical Synthesis: Employed as a sophisticated scaffold in medicinal chemistry for structure-activity relationship (SAR) studies and library synthesis.
• Academic & Institutional Research: Utilized in universities and research institutes for methodological studies in organic synthesis and catalysis.

Basic Information

Product Name	4''-Methylene-7',8'-Didehydro-4'',5''-Dihydrodispiro[2H-1,5-Benzodioxepin-3(4H),2'-Bicyclo[2.2.2]Octane-5',2''(3''H)-Furan]-6'-One
CAS No.	21142-52-9
Molecular Formula	C20H20O4
Molecular Weight	324.37 g/mol
Synonyms	Dispiro[2H-1,5-benzodioxepin-3(4H),2'-bicyclo[2.2.2]octane-5',2''(3''H)-furan]-6'-one, 4''-methylene-7',8'-didehydro-4'',5''-dihydro-; 4''-Methylenedispiro[2H-1,5-benzodioxepin-3(4H),2'-bicyclo[2.2.2]oct-5-ene-5',2''(3''H)-furan]-6'-one; CAS 21142-52-9; 4''-Methylene-7',8'-didehydro-4'',5''-dihydrodispiro[benzodioxepin-3(4H),2'-bicyclo[2.2.2]octane-5',2''-furan]-6'-one
EINECS	Contact for details

Quality Control

Every batch of 4''-Methylene-7',8'-Didehydro-4'',5''-Dihydrodispiro[2H-1,5-Benzodioxepin-3(4H),2'-Bicyclo[2.2.2]Octane-5',2''(3''H)-Furan]-6'-One is manufactured and tested under a strict quality management system. Our products undergo rigorous analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency meet the high standards required for research and development. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment.

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 flame. For long-term storage, consider an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 97.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
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.