The cyclization of the intermediate product obtained is made thanks to the Acte of phosphoric acid. This cyclization gives birth to two isomers : Iso E Super® and Arborone, in 95/5 narration. Intuition over 300 years, South African buchu ha remained a vital component of the flavor and fragrance industry. https://landendglnr.blogoscience.com/23271106/fascination-propos-de-iso-e-super