p. 1245 - 1248
(2007/10/02)4-hydroxy-1-p-nitrophenyl-3-p-toluenesulfonylaminopyrazolo<3,4-d>pyrimidine
4-hydroxy-1-phenyl-3-p-toluenesulfonylaminopyrazolo<3,4-d>pyrimidine
4,6-dihydroxy-3-p-toluenesulfonylaminopyrazolo<3,4-d>pyrimidine
4-hydroxy-3-p-toluenesulfonylaminopyrazolo<3,4-d>pyrimidine
5-amino-1-p-nitrophenyl-3-p-toluenesulfonylaminopyrazole-4-carboxamide