Abstract
The chemical composition of the essential oil of Moschosma riparium Hochst. from Manaus, Amazonas state, Brazil was investigated by GC and GC/MS. A total of 66 compounds were identified among monoterpenes, sesquiterpenes and diterpenes. The major components found in the oil were fenchone (19.9%), l4-hydroxy-9-epi-β-caryophyllene (12.3%), α-cadinol (5.2%), isocaryophyllene (3.9%), camphor (3.4%) and δ-cadinene (3.1%).