The molecule is an organic heterotricyclic compound consisting of a pyran ring fused to a pteridine ring system. It is an organic heterotricyclic compound, an organonitrogen heterocyclic compound and an oxacycle.
(2-amino-7-hydroxy-4-oxo-6-sulfanyl-3,5,5a,8,9a,10-hexahydropyrano[3,2-g]pteridin-8-yl)methyl dihydrogen phosphate