Synthetic molecules in perfume: what are they used for
A synthetic molecule in perfumery is not an imitation: it is an odorant substance made in a laboratory, sometimes identical to a molecule found in nature, sometimes completely new. Iso E Super, ambroxan and ethyl maltol are among the most widely used in the last fifty years, and none of the three exists in a plant or animal in its current form. They do not replace nature: they do what nature cannot.
Why perfumery invented molecules
Until the end of the 19th century, perfumers had only natural materials at their disposal: flowers, woods, resins, animal secretions. Some sought-after scents simply did not exist in nature in a usable, stable or affordable form. Synthetic coumarin, isolated in 1868 by the English chemist William Henry Perkin, paved the way: it reproduced the scent of tonka bean without relying on its harvest. Since then, the fragrance industry—Givaudan, Firmenich, IFF, Symrise, Robertet, Mane—has developed molecules for three precise reasons: to achieve an olfactory effect that would otherwise be unattainable, to stabilize a fragrance over time, and to address the scarcity or cost of certain natural raw materials.
Iso E Super: a wood that is not a wood
Iso E Super is a molecule from the ambrox family, developed in the IFF laboratories in the late 1960s based on research initiated a decade earlier. Its scent is difficult to describe: woody, slightly peppery, almost velvety, with a unique characteristic—it adapts to each person's olfactory receptor concentration, which explains why some people can barely smell it while others perceive it very strongly. Used in small doses, it adds volume and texture to a natural wood such as cedar or sandalwood, without having an identifiable scent of its own. Used in large doses, it becomes the very backbone of the fragrance: this is the principle that made Escentric Molecules' Molecule 01 famous, composed almost entirely of this molecule. In this same minimalist woody spirit, the Spezia by Christian Provenzano combines aromatic and woody facets with this same idea of depth without heaviness.
Ambroxan: ambergris without the whale
Ambroxan reproduces the dry, salty and warm note of genuine ambergris, the intestinal secretion of the sperm whale that was harvested at sea for a long time. The molecule was first isolated in the 1950s from
