1951 年 71 巻 9 号 p. 939-940
2-Aminothiazole-, 2-aminopyrimidine- and 2-amino-4-methylthiazole-2-sulfonic acids were obtained by the application of sodium bisulfite to the aqueous solution of 2-aminothiazole, 2-aminopyrimidine and 2-amino-4-methylthiazole with subsequent acidification or by the application of sulfur dioxide gas to these aqueous solutions.