| 摘要 |
PURPOSE:Antibiotic XK-99. Characteristics thereof are as follows: reddish-brown powder; molecular weight 390;m.p. 2504beta;specific rotation[alpha]<2>D<4>= -360 deg. (c=0.1, methanol); IR absorption spectrum: shows absorption peaks at 3400, 2900, 1720, etc. (cm<-1>);soluble in methanol, etc., slightly soluble in water and insoluble in benzene, chloroform, etc.;etc |
