Chemistry 101: Rose Oxide



Rose oxide was discovered in 1959 by Casimir F. Seidel and Max Stoll at Firmenich. It is a significant ingredient of Bulgarian rose oil. It is also a contributing factor to the flavour of lychees.

Its discovery was considered so important it warranted a postage stamp in Russia.

Further reading: Rose oxide – the scent of shiny metal roses via 4160 Tuesdays.

sources: From Classical to Modern Chemistry: The Instrumental Revolution by Peter T.J. Morris


Chemistry 101: Gamma-Undecalactone / Persicol


Gamma-undecalactone, Periscol, Peach Aldehyde, C14

“Jacques Guerlain built Mitsouko by breaking the power of the oak moss with a natural jasmine and, more significantly, a new synthetic molecule that had recently appeared. Jukov and Schestakow might have patented aldehyde C-14 (actually not an aldehyde but a lactone; it’s real name is gamma-undecalactone) in 1908, but Michael Edwards reports that it had been available from other suppliers, and it was probably Firmenich that introduced Jacques Guerlain to the molecule in the form of a base it called Persicol, which it had put on the market in 1908. C-14 was a marvel, a fruity, aromatic, delicious scent that gave ripe peach skin. Guerlain plugged C-14 into the equation perfectly (the rumor is, actually, similar to Chanel 5, that he in fact accidentally overdosed the stuff; who knows), and Mitsouko became a thing of subtle opulence, strength and balance and silken twilight.”  Chandler Burr

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