... (2R,3S,4R,5R) Vậy chất (2R,3S,4R,5R)-2,3,4,5,6-petahiđroxihexenal D-glucôzơ O HO HO H H H H OH OH OH HO HO H H COOH H H OH OH COOH HO HO HO H H H H O OH COOH (2S,3S,4R,5R) Vậy chất (2S,3S,4R,5R)-2,3,4,5,6-petahiđroxihexenal ... (2R,3S,4R,5R)-2,3,4,5,6-petahiđroxihexenal O HO HO H H H H OH OH H N O OH (2S,3S,4R,5R)-2,3,4,5,6-petahiđroxihexenal Trường hợp nhận Vậy: O O OH H H OH H OH HO H H OH HO H OH (2S,3R,4R)-2,3,4,5-tetrahiđroxipentanal D-Arabinozơ ... (2R,3S,4S,5R)-2,3,4,5,6-petahiđroxihexenal O HO HO HO H H H H OH H N O OH (2S,3S,4S,5R)-2,3,4,5,6-petahiđroxihexenal Trường hợp loại O Nếu TH 2: H HO H H OH H OH OH H N O H HO H H COOH OH H OH OH COOH Có tính quang học HO...