(3S,4S)-3,4,6-trihydroxy-2,5-dioxohexanoate (3S,4S)-3,4,6-trihydroxy-2,5-dioxo-hexanoate (3S,4S)-3,4,6-trihydroxy-2,5-diketo-hexanoate 2,5-Didehydro-D-gluconate 2-Dehydro-L-idonate CHEBI:11449 D-threo-hexo-2,5-diulosonate