1951 年 71 巻 12 号 p. 1393-1395
The authors compared the paper chromatograms of hydriodies of organic bases obtained by developing with butanol with those of the quarternary ammonium iodides. On the latter could be observed either a spot of iodine which coincided with the spot of the base colored by Dragendorff's reagent, or two spots of iodine one of which coincided with that of the base while the spot of iodine of the former did not coincide at all.