Author's Organization：/ Pharmaceutical Institute, Tohoku University National Institute of Hygienic Sciences National Institute of Hygienic Sciences:(Present address)Department of Domestic Sciences, Sagami Women's University
An aminoquinone was isolated from the muscle of Ascaris lumbricoides var. suis and characterized as rhodoquinone-9 (I, n=9) by the spectral data and by the identification with the synthetic specimens from ubiquinone-9 (III, n=9) and from 5-demethoxyubiquinone (IV). Biological significance of occurrence of the quinone in the worm is also discussed.
