1972 年 92 巻 2 号 p. 210-212
The neutral volatile oil of the flower stalk of Petasites japonicus was separated into 17 parts by gas chromatography and the substances corresponding to peaks 7, 11, 12, and 16 were respectively proved to be thymolmethylether, β-elemene, β-caryophyllene, and fukinone.