Helvetolide

Helvetolide is a synthetic musk of the alicyclic class, which is also known as the cycloalkyl ester or linear musks. Its formula is C17H32O3 and its molecular weight is 284.43 g/mol. Its IUPAC name is [2-[1-(3,3-dimethylcyclohexyl)ethoxy]-2-methylpropyl] propanoate. The molecule is a propanoate ester of a 2-methylpropanol that carries a 1-(3,3-dimethylcyclohexyl)ethoxy group. The dextrorotatory isomer is less floral and more musky than the levorotatory isomer.

Alicyclic musks differ dramatically in structure from the earlier aromatic, polycyclic and macrocyclic musks, being modified alkyl esters. They are a relatively novel class of musk compounds.

The first compound of the alicyclic class was introduced in 1975 with Cyclomusk, though similar structures were noted earlier in citronellyl oxalate and Rosamusk. Alicyclic musks were discovered before 1980, but only the introduction of Helvetolide in 1990 brought a compound of this class to commercial scale. Romandolide, a more ambrette and less fruity alicyclic musk than Helvetolide, was introduced ten years later.

In European hazard information, the material is marked as dangerous for the environment, toxic to aquatic organisms and able to cause long-term adverse effects in the aquatic environment.

This note in PREMIEREPEAU. Albâtre Sépia. Sample all seven extraits in the Discovery Set.

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