Cyclic Structure for Fructose Cyclic hemiacetal formed by reaction of C=O at C2 with -OH at C5. ICH2OH 2C=0 H HO-CH2Q: 0-H 6 HO3-H OH 2 HO H4-OH 5K日 HO H4 3 H4 3 CH2OH H 一OH OH H OH H 6CH2OH D-fructofuranose D-fructose cyclic form => Chapter 23 10Chapter 23 10 Cyclic Structure for Fructose Cyclic hemiacetal formed by reaction of C=O at C2 with -OH at C5. => D-fructofuranose