| 释义 |
xan·thop·ter·in
\zanˈthäptərə̇n\ noun
(-s)
Etymology: xanth- + pter- + -in
: a yellow crystalline amphoteric high-melting pigment H2NC6HN4(OH)2 that occurs especially in the wings of yellow butterflies and also in the urine of mammals and that is convertible into leucopterin by oxidation and into folic acid by the action of various microorganisms; 2-amino-4,6-dihydroxy-pteridine |