The Monoterpene Constituents of the Essential Oil of Hinoki (Chamaecyparis Obtusa (Sieb. et Zucc.) Endl.)

Abstract d-α-Pinene, β-pinene, myrcene, d-limonene, dipentene, β-phellandrene, p-cymene, 1,8-cineole, camphor, l-α-terpineol, α-terpinyl acetate and bornyl acetate have been identified, and camphene, linalool and borneol have been gas-chromatographically confirmed. Of these compounds, β-pinene, myrcene, β-phellandrene, 1,8-cineole and p-cymene have been found for the first time in this work. The main constituents of the monoterpene fraction are d-α-pinene and l-α-terpineol; the former amounts to 66.3%, and the latter to 10.1%, the remaining constituents being within a few %.