Exaltolide Total Aroma Chemical
CAS# 106-02-5

Exaltolide Total is the proprietary trade name used by the fragrance house Firmenich for a macrocyclic musk compound. Chemically, this material is known as cyclopentadecanolide or 15-pentadecanolide, and it is also referred to by other names such as thibetolide and omega pentadecalactone. Although this structure occurs in nature and is a key contributor to the characteristic musky odor of angelica root essential oil, Exaltolide Total is produced entirely by industrial synthesis to ensure purity and reliable supply. The successful synthesis of this class of musks marked an important milestone, providing the perfume industry with a humane, safe alternative to natural deer musk while faithfully capturing the seductive character of nature. The history of the molecule dates back to 1927, when Kerschbaum discovered it in nature. Later, Nobel Prize–winning scientist Leopold Ruzicka and his team at Firmenich studied it and succeeded in synthesizing it. The Exaltolide Total grade is carefully refined to optimize its animalic and powdery facets, delivering maximum performance for the formulator. At room temperature, it appears as a white crystalline solid or waxy crystalline mass, and it melts into a colorless liquid when warmed to around 35–40°C. Therefore, users must gently melt it or pre-dilute it in solvents such as DPG, ethanol, or DEP before compounding to ensure accuracy and uniform dissolution.

Description

As a musk ingredient, Exaltolide Total performs strongly in the base, acting as an excellent fixative and booster. Its odor is distinctly musky with a soft animalic nuance, creating a warm, sensual “skin” effect without coming across as dirty or unpleasant. Its powdery character is also very pronounced, adding smoothness and a velvety texture. The elegance of this material lies in its ability to polish other notes-removing harshness or rough edges and giving the overall composition a more finished, refined impression. Although the perceived strength when smelled neat can vary from person to person due to the temporary “musk fatigue” often associated with macrocyclic musks, its substantivity is extremely high, lingering for weeks. In formulas, it is used to create a sensual skin effect, to provide a luxurious foundation that makes florals shine, and to extend the longevity of the entire scent on skin. When combined with muscone, it can recreate the natural Tonkin deer musk impression with its characteristic sweet-powdery and animalic facets. With rose or jasmine, it adds depth and outstanding diffusion and tenacity to the floral theme. When blended with ambrettolide, the musk accord gains greater radiance and elegance.

Applications

Exaltolide Total is widely used across luxury perfumes, powdery styles, orientals, and musk-centric fragrances. It also appears in skin creams and shower gels to impart a smooth feel and long-lasting scent, and in fabric softeners thanks to its strong substantivity on textiles. From a safety standpoint, this material is considered very mild, with low skin-irritation potential; it is readily biodegradable, and it is currently not subject to a specific IFRA concentration limit on toxicological grounds. Typical use levels in fine fragrance range from 1% to 20%, and can be higher in base accords to build thickness. Store it in a cool, dry, well-ventilated place, and gently warm it if it solidifies due to cold. In the market, Exaltolide Total is cited as an important component in well-known products such as Narciso Rodriguez For Her (a clean, waxy-powdery musk complex with an animalic undertone), Le Labo Musc 25 (a luxurious white-musk style), and Frederic Malle Musc Ravageur, where it provides a solid foundation for its sensuality. Finally, specialist Steffen Arctander described this material in detail as entry No. 788 in Volume 1 of Perfume and Flavor Chemicals under the chemical name cyclopentadecanolide. He noted it as a delicate, sweet, and extremely tenacious musk, used in the finest perfumes as a fixative, an odor modifier, a blending component with other musks, and a booster for floral bouquets. According to him, its effect is often underestimated when smelled neat, yet it has a remarkable ability to elevate the entire formula.