The molecule is dianion of (1S,2R)-1-C-(indol-3-yl)glycerol 3-phosphate arising from deprotonation of both phosphate OH groups. It is a conjugate base of a (1S,2R)-1-C-(indol-3-yl)glycerol 3-phosphate.
[(2R,3S)-2,3-dihydroxy-3-(1H-indol-3-yl)propyl] phosphate