The molecule is a carboxylic acid trianion resulting from the deprotonation of the phosphate group and both carboxy groups of 7,8-dihydromethanopterin. The major species at pH 7.3. It is a carboxylic acid trianion and an organophosphate oxoanion. It is a conjugate base of a 7,8-dihydromethanopterin.
(2S)-2-[[(2R,3S,4R,5S)-5-[(2R,3S,4S)-5-[4-[[(1R)-1-[(7S)-2-amino-7-methyl-4-oxo-7,8-dihydro-3H-pteridin-6-yl]ethyl]amino]phenyl]-2,3,4-trihydroxypentoxy]-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxypentanedioate