Methyl isoeugenol (isomethyleugenol) is a phenylpropanoid, specifically the methyl ether of isoeugenol. It is a significant component found in the essential oils extracted from various natural sources, including Acorus calamus, the bark of Croton malambo, and the rhizomes of Zingiber zerumbet, Hedychium coronarium, and Etlingera cevuga. It typically appears as a slightly thick, viscous liquid. Methyl isoeugenol is widely utilised in the formulation of flavours and fragrances.