Description

Spiro[5.5]Undec-8-En-1-One, 11-Ethyl-7-Methyl- (9Ci) is a specialized spirocyclic ketone compound with the CAS registry number 678981-39-0. This high-purity intermediate is valued for its unique bridged ring structure, which provides a rigid three-dimensional framework essential for advanced chemical synthesis. It is primarily sought by research and development teams in the pharmaceutical and agrochemical sectors for the creation of novel active ingredients and complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of novel drug candidates, particularly those requiring complex, three-dimensional scaffolds for enhanced biological activity and selectivity.
• Agrochemical Research: Used in the development of new pesticides and herbicides, where its spirocyclic structure can contribute to unique modes of action and improved environmental profiles.
• Material Science: Acts as a precursor for specialty polymers and advanced organic materials that benefit from rigid, sterically defined monomers.
• Flavor & Fragrance Chemistry: Employed in the research and synthesis of novel aroma chemicals and complex odorants due to its unique structural characteristics.
• Academic & Industrial R&D: A valuable compound for methodological studies in organic synthesis, including catalysis and ring-forming reactions.

Basic Information

Product Name	Spiro[5.5]Undec-8-En-1-One, 11-Ethyl-7-Methyl- (9Ci)
CAS No.	678981-39-0
Molecular Formula	C14H22O
Molecular Weight	206.33 g/mol
Synonyms	11-Ethyl-7-methylspiro[5.5]undec-8-en-1-one; 11-Ethyl-7-methylspiro[5.5]undec-8-enone; 7-Methyl-11-ethylspiro[5.5]undec-8-en-1-one; Spiro[5.5]undec-8-en-1-one, 11-ethyl-7-methyl-; 678981-39-0; 11-Ethyl-7-methyl-1-oxaspiro[5.5]undec-8-ene
EINECS	Contact for details

Quality Control

Our Spiro[5.5]Undec-8-En-1-One, 11-Ethyl-7-Methyl- (9Ci) is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including chromatography and spectroscopy, to ensure identity, purity, and consistency meet rigorous in-house specifications. A Certificate of Analysis (COA) detailing all critical parameters is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at 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 structure
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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