The molecule is a organophosphonate oxoanion obtained by deprotonation of the carboxy and one of the ohopsphonate OH groups of phosphonoformic acid. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is an organophosphonate oxoanion and a monocarboxylic acid anion. It is a conjugate base of a phosphonoformic acid. It is a conjugate acid of a phosphonatoformate.
[hydroxy(oxido)phosphoryl]formate