The molecule is the organophosphate oxoanion and tricarboxylic acid trianion formed from sarcinapterin by loss of a proton from the phospho group and from each of the three carboxy groups; major microspecies present at pH 7.3. It is an organophosphate oxoanion and a tricarboxylic acid trianion. It is a conjugate base of a sarcinapterin.
(2S)-2-[[(2S)-2-[[(2R,3S,4R,5S)-5-[(2R,3S,4S)-5-[4-[[(1R)-1-(2-amino-7-methyl-4-oxo-3H-pteridin-6-yl)ethyl]amino]phenyl]-2,3,4-trihydroxypentoxy]-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxy-4-carboxylatobutanoyl]amino]pentanedioate