Description

Spiro[5.5]Undecane, 1-Methylene- is a specialized spirocyclic hydrocarbon building block of significant interest in advanced organic synthesis and materials science. Its unique bridged, rigid structure makes it a valuable precursor for creating complex molecular architectures with tailored properties. This compound is primarily sought after by research and development teams in the pharmaceutical, agrochemical, and specialty polymer industries for applications requiring high-performance intermediates.

Application

• Pharmaceutical Intermediate: Serves as a key chiral scaffold or rigid core structure in the synthesis of novel active pharmaceutical ingredients (APIs), potentially for central nervous system (CNS) or antiviral drugs.
• Agrochemical Synthesis: Used in the development of new-generation pesticides and herbicides, where its stable spirocyclic framework can enhance metabolic stability and efficacy.
• Advanced Material Precursor: Acts as a monomer or cross-linking agent in the production of high-performance polymers, resins, or liquid crystals with specific thermal and mechanical properties.
• Fragrance & Flavor Chemistry: Employed as a starting material for synthesizing novel musk-like odorants or complex flavor molecules due to its unique hydrocarbon skeleton.
• Organic Synthesis Building Block: Utilized in academic and industrial R&D for constructing complex natural product analogs, catalysts (ligands), and other fine chemicals.
• Coating & Adhesive Formulations: Incorporated to modify the properties of specialty coatings and adhesives, improving characteristics like hydrophobicity, flexibility, or chemical resistance.

Basic Information

Product Name	Spiro[5.5]Undecane, 1-Methylene-
CAS No.	27723-50-8
Molecular Formula	C12H20
Molecular Weight	164.29 g/mol
Synonyms	1-Methylenespiro[5.5]undecane; Spiro[5.5]undec-1-ene; 1-Methylene-spiro[5.5]undecane; 1-Methylidene-spiro[5.5]undecane; Bicyclo[5.5.0]dodec-1-ene (ambiguous); Spiro-1-undecene derivative
EINECS	Contact for details

Quality Control

Our Spiro[5.5]Undecane, 1-Methylene- is produced and handled under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with detailed results from GC, HPLC, NMR, and other relevant techniques. Specifications can be tailored to meet specific R&D or cGMP requirements upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. For long-term storage under an inert atmosphere (nitrogen or argon), please contact our technical team.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0% (Standard Grade)
Purity (HPLC)	≥ 97.0% (High Purity 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.