出典:Wiktionary
pterin (countable かつ uncountable, 複数形 pterins)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/10 22:02 UTC 版)
Pterin is a heterocyclic compound composed of a pteridine ring system, with a keto group and an amino group on positions 4 and 2 respectively. Several tautomers of pterin exist and are shown below. Derivatives of pterin include pterins and folates.