244 Magnolin
中药学

        [结构式][主要物性]分子式C23H28O6;分子量400.47。无色棱晶,熔点91～93℃。UVλmaxCH3OHnm:204,229,278。IRνmaxKBrcm-1:1590,1520,1508,1265,1245,1020,850,837,800。1HNMR(CDCl3)δ:3.10(2H,m),4.75(2H,m),4.27(2H,m),3.91(2H,m);3.82(3H,s),3.863(6H,s),3.862(3H,s),3.88(3H,s);6.56(2H,s),6.8～    （共 1151 字）     [阅读本文] >>