单词 | leucopterin |
释义 | > as lemmasleucopterin leucopterin n. Brit. /l(j)uːˈkɒpt(ə)rɪn/ , U.S. /luˈkɑptərən/ [pterin n.] Chemistry a white pigment found esp. in certain butterflies; 2-amino-4, 6, 7-trihydroxypteridine, H2NC6N4(OH)3.ΚΠ 1927 Chem. Abstr. 21 224 (heading) Leucopterin, the white wing pigment of cabbage butterflies (Pieris brassicae and P. napi). 1954 Sci. News 34 91 The purines and pterines contribute a major source of colour to the wings of butterflies... These compounds are only present in small amounts representing in the case of white leucopterin of Pierid butterflies about 0·18 milligramme per specimen. < as lemmas |
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