Description

Spiro[5.5]Undec-1-Ene CAS NO 699-56-9 is a specialized spirocyclic hydrocarbon building block characterized by its unique bridged ring structure. This compound is valued for its rigid, three-dimensional geometry, which is crucial for imparting specific steric and electronic properties in advanced material synthesis. It is primarily sought after by research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty polymer industries for applications requiring precise molecular architecture.

Application

• Pharmaceutical Intermediate: Serves as a key chiral scaffold or rigid core structure in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for central nervous system (CNS) and antiviral drug candidates.
• Agrochemical Synthesis: Used as a building block for creating novel pesticides and herbicides, where its spirocyclic framework can enhance biological activity and environmental stability.
• Ligand and Catalyst Development: Employed in organometallic chemistry to construct sophisticated, sterically demanding ligands for asymmetric catalysis and transition metal complexes.
• Advanced Material Science: Acts as a monomer or cross-linking agent in the development of high-performance polymers, liquid crystals, and organic semiconductors with tailored thermal and optical properties.
• Fragrance and Flavor Chemistry: Utilized as a precursor for synthesizing complex musk-like odorants and flavor compounds due to its stable, multi-cyclic nature.
• Academic and Industrial R&D: A valuable reagent for methodological studies in organic synthesis, including ring-opening metathesis polymerization (ROMP) and other cycloaddition reactions.

Basic Information

Product Name	Spiro[5.5]Undec-1-Ene
CAS No.	699-56-9
Molecular Formula	C11H18
Molecular Weight	150.26 g/mol
Synonyms	Spiro[5.5]undec-1-ene; 1-Spiro[5.5]undecene; Bicyclo[5.5.0]dodec-1(7)-ene; 1,7-Dimethylspiro[4.4]non-1-ene (incorrect but common misnomer); Spiro-5,5-undec-1-ene
EINECS	Contact for details

Quality Control

Our Spiro[5.5]Undec-1-Ene is produced and handled under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatography (GC/HPLC) and spectroscopic methods (NMR, IR), to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting critical specifications. We support cGMP and ISO 9001 standards for research and development materials.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from strong oxidizing agents. For long-term storage, consider under an inert atmosphere (nitrogen or argon) to prevent potential oxidation.

Specification

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

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