Gamma-Undecanolactone, identified by its CAS number 104-67-6 and FEMA number 3091, is a synthetic macrocyclic lactone that has become a cornerstone in both the flavor and fragrance industries. Its distinctive aroma, often described as creamy, peachy, and slightly nutty, is attributed to its specific molecular structure. Understanding the chemistry behind this compound is crucial for its effective application, particularly for those seeking to buy gamma undecalactone for perfumery and other specialized uses.

Chemically, Gamma-Undecanolactone is a cyclic ester, specifically a delta-lactone, derived from undecylenic acid. The traditional name 'Aldehyde C-14' is a misnomer, as the molecule is not an aldehyde but a lactone. This structural difference is important for its olfactory profile and chemical behavior. The molecule has an 11-carbon backbone with a terminal ester linkage forming the lactone ring. Its molecular formula is C₁₁H₂₀O₂, and it has a molecular weight of approximately 184.28 g/mol. Typically appearing as a colorless to pale yellow liquid, its properties like boiling point (150-152°C at 10 mmHg) and density (0.95-0.97 g/cm³ at 20°C) are well-documented.

The synthesis of Gamma-Undecanolactone often involves the acid-catalyzed lactonization of undecylenic acid, a renewable resource derived from castor oil. Alternative synthetic routes also exist, aiming for efficiency and yield. The resulting product's purity, often assessed by gas chromatography (GC) with a target of ≥95%, is paramount for its application in sensitive sectors like food and perfumery. The compound's stability, flash point (>110°C), and storage recommendations (2-8°C in an airtight container) are vital for maintaining its quality and efficacy.

In perfumery, its role as a building block for sophisticated fragrance compositions is immense. As a creamy coconut peach scent chemical, it adds a layer of realism and opulence. It’s not just about the direct scent; it acts as a performance enhancer, fixating volatile esters and improving the overall diffusion and longevity of a fragrance. This makes it a valuable asset when seeking to master the nuances of undecan-4-olide applications in flavors and fragrances.

NINGBO INNO PHARMCHEM CO.,LTD. ensures that our Gamma-Undecanolactone adheres to stringent quality standards, reflecting its critical role as an aroma chemical. By providing access to this well-characterized ingredient, we empower formulators to leverage its chemical properties effectively. Whether used for its signature peach note or its subtle creamy undertones, the scientific understanding of Gamma-Undecanolactone is key to unlocking its full potential in creating captivating sensory experiences.