Persicol is one of the most famous classical bases, being first used in Nuit de Chine (1913—formula below) by Maurice Schaller for Paul Poiret's Les Parfums de Rosine, but most famously ten years later as the key peach note at 0.4% pure in Mitsouko (1919) by Jacques Guerlain. It also featured in Bois des Îles by Ernest Beaux for Chanel with 4% Ambre Solide. Contrary to popular belief, Persicol (created by Chuit Naef & Cie) is not a synonym for the chemical undecalactone gamma (so-called Aldehyde C-14) which was patented in 1908 but an achingly sweet peach base featuring that chemical to exploit and demonstrate its commercial uses to perfumers of the day, just as De Laire created Mousse de Saxe to market the then recently discovered chemical isobutyl quinoline. Persicol is used in the same way as undecalactone gamma and can be used as a one for one replacer.
