The molecule is a tricarboxylic acid anion obtained by deprotonation of the carboxy and phosphate groups of 5,6,7,8-tetrahydrosarcinapterin; major species at pH 7.3. It is a tricarboxylic acid anion and an organophosphate oxoanion. It is a conjugate base of a 5,6,7,8-tetrahydrosarcinapterin.
(2S)-2-[[(2S)-2-[[(2R,3S,4R,5S)-5-[(2R,3S,4S)-5-[4-[[(1R)-1-[(6S,7S)-2-amino-7-methyl-4-oxo-5,6,7,8-tetrahydro-3H-pteridin-6-yl]ethyl]amino]phenyl]-2,3,4-trihydroxypentoxy]-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxy-4-carboxylatobutanoyl]amino]pentanedioate