Summary The phenolic ether obtained from the essential oil of Caesulia aaillaries has been shown to be 2,4,5-trimethoxyallylbenzene (I), on the basis of chemical and spectroscopic evidence. It has tentatively been named as y-asarone. ... Two trimethoxyallylbenzenes have been reported to occur in nature. Elemicin has been shown by Semmlerl to be 3,4,5-trimethoxyallylbenzene and confirmed by syntheses.293 Calamol4 from the rhizomes of Acorus calawus (variety " ...