CH-OH CH-OH =0 =0 HOCH HCOH H CH OH CH-OH D-核酮 D-木轴 CH2OH 0 0 =0 HOCH HC HOCH HOCH HOCH HCOH HCOH HCOH CHOH CH-OH D阿洛酮糖 D果糖 D-山梨轴 D 塔洛酮糖 CH.OH =0 C=0 HO HOCH HO- HOCH HOCH HCOH HCOH OH CH.OH 警 质 庆 庆南斋 质 质晶 描 8 CH2OH C O CH2OH 二羟丙酮 CH2OH C O CH2OH HCOH 赤藓酮糖 CH2OH C O CH2OH HCOH HCOH D-核酮糖 CH2OH C O CH2OH HOCH HCOH D-木酮糖 CH2OH C O CH2OH HCOH HCOH D-阿洛酮糖 HCOH CH2OH C O CH2OH HOCH HCOH HCOH D-果糖 CH2OH C O CH2OH HCOH HOCH HCOH D-山梨糖 CH2OH C O CH2OH HOCH HOCH HCOH D-塔洛酮糖 CH2OH C O CH2OH HCOH HCOH HCOH HCOH D-阿洛 庚酮糖 CH2OH C O CH2OH HOCH HCOH HCOH HCOH D-景天 庚酮糖 CH2OH C O CH2OH HCOH HOCH HCOH HCOH D-葡萄 庚酮糖 CH2OH C O CH2OH HOCH HOCH HCOH HCOH D-甘露 庚酮糖 CH2OH C O CH2OH HCOH HCOH HOCH HCOH D-古洛 庚酮糖 CH2OH C O CH2OH HOCH HCOH HOCH HCOH D-艾杜 庚酮糖 CH2OH C O CH2OH HCOH HOCH HOCH HCOH D-半乳 庚酮糖 CH2OH C O CH2OH HOCH HOCH HOCH HCOH D-塔洛 庚酮糖