2-己酮醣

tetra-O-acetyl-1-bromo-keto-L-1-deoxy-fructose

4-[(Ξ)-4-hydroxy-4-(Lr-1tF,2cF,3rF,4-tetraacetoxy-but-catF-yl)-2-thioxo-thiazolidin-3-yl]-butyric acid