A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
Studies on the Derivatives of Naphthoquinones. XVII The Pigments of Sea-urchins. XII
1964
Proceedings of the Japan Academy
Preserved Fulltext
Teijiro YABUTA, M.J.A" Dec. 12, 1954) Anthocidaris crassispina (Ag.), the Japanese 'Murasakiuni', is a variety of sea-urchins found exclusively in Japan. Its shell is colored in deep dark violet and the coloration is especially strong in the spines. The authors isolated two kinds of 1, 4-naphthoquinone pigments from the spines of the sea-urchin and named them spinochrome M1 and spinochrome M2 respectively.l' The constitutional formulas proposed by the authors are as follows.
doi:10.2183/pjab1945.40.836
fatcat:fzx6yyd3rbdc3kf3ul2bu2mqwm