Description

(-)-Isolongifolen-9-One CAS NO 26839-52-1 is a high-purity, optically active sesquiterpenoid ketone valued for its unique and complex woody-amber olfactory profile. This compound is a key building block and fragrance ingredient, prized for its ability to impart sophisticated, long-lasting base notes in fine perfumery. It serves as a critical intermediate for the synthesis of advanced aroma chemicals and is essential for R&D and production in the fragrance, flavor, and specialty chemical industries.

Application

• Fragrance & Perfumery: A premium base note ingredient for creating woody, amber, and musky accords in fine fragrances, personal care products, and home scents.
• Flavor & Aroma Chemistry: Used as a sophisticated flavor modifier and as a starting material for synthesizing novel aroma molecules with complex olfactory characteristics.
• Chemical Synthesis: A versatile chiral intermediate in organic synthesis for pharmaceuticals, agrochemicals, and other fine chemicals due to its defined stereochemistry.
• Research & Development: A standard compound for analytical testing, method development, and olfactory research in academic and industrial laboratories.
• Specialty Chemicals: Employed in the formulation of high-end functional products where specific scent profiles are required.

Basic Information

Product Name	(-)-Isolongifolen-9-One
CAS No.	26839-52-1
Molecular Formula	C15H24O
Molecular Weight	220.35 g/mol
Synonyms	(-)-Isolongifolenone; (1R,2S,7S)-2,6,6,8-Tetramethyltricyclo[5.3.1.01,5]undecan-8-one; Isolongifolen-9-one; Laevo-Isolongifolenone; (-)-9-Isolongifolenone; (1R,2S,7S)-(-)-Isolongifolenone; Tricyclo[5.3.1.01,5]undecan-8-one, 2,6,6,8-tetramethyl-, (1R,2S,7S)-
EINECS	Contact for details

Quality Control

Our (-)-Isolongifolen-9-One is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as chiral purity, chemical identity, and assay. We support compliance with relevant industry standards, including IFRA and REACH, for fragrance applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area at controlled room temperature (15-25°C). Due to its highly volatile nature, ensure containers are sealed when not in use and stored away from heat sources and open flames.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Chiral Purity (GC)	≥ 98.0% ee
Refractive Index (20°C)	1.498 - 1.508
Specific Gravity (20°C)	0.970 - 0.990

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