1-(2',3',5'-Tri-O-acetyl-β-D-ribofuranosyl)-3-thiocarbamoyl-4-methylmercaptopyrazolo(3,4-d)pyrimidine

4-sulfanylidene-1,2-dihydropyrazolo[3,4-d]pyrimidine-3-carbonitrile

1-(2',3',5'-Tri-O-acetyl-β-D-ribofuranosyl)-3-cyano-4-methylmercaptopyrazolo<3,4-d>pyrimidine

4-methylsulfanyl-2H-pyrazolo[3,4-d]pyrimidine-3-carbonitrile

ethyl N-(4,5-dicyano-1H-pyrazol-3-yl)methanimidate