The molecule is trianion of 5-methyl-5,6,7,8-tetrahydromethanopterin arising from deprotonation of carboxy and phosphate OH groups; major species at pH 7.3. It is an organophosphate oxoanion and a dicarboxylic acid dianion. It is a conjugate base of a 5-methyl-5,6,7,8-tetrahydromethanopterin.
(2S)-2-[[(2R,3S,4R,5S)-5-[(2R,3S,4S)-5-[4-[[(1R)-1-[(6S,7S)-2-amino-5,7-dimethyl-4-oxo-3,6,7,8-tetrahydropteridin-6-yl]ethyl]amino]phenyl]-2,3,4-trihydroxypentoxy]-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxypentanedioate