Composition of the Volatile Oil of Achillea Wilhelmsii C. Koch from Iran

Composition of the volatile oil of the aerial parts of Achillea wilhelmsii C. Koch ( Compositae) was investigated by GLC and GC-MS. Fifty-seven components representing 98.5% composition of the essential oil were characterized. The main components of the oil were carvacrol (25.1%), linalool (11.0%), 1,8-cineol ( 10.3%), E-nerolidol (9.0%) and borneol (6.4%).