The molecule is an organic cation that is the conjugate acid of queuine, obtained by protonation of the secondary amino group; major species at pH 7.3. It is an ammonium ion derivative and an organic cation. It is a conjugate acid of a queuine.
(2-amino-4-oxo-3,7-dihydropyrrolo[2,3-d]pyrimidin-5-yl)methyl-[(1S,4S,5R)-4,5-dihydroxycyclopent-2-en-1-yl]azanium