carbon disulfide
5-amino-3-methoxy-1H-pyrazole-4-carbonitrile
methyl iodide
3-methoxy-4,6-bis(methylsulfonyl)-1H-pyrazolo[3,4-d]pyrimidine
3-methoxy-6-methylthio-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)pyrazolo<3,4-d>pyrimidin-4(5H)-one
6-amino-1-β-D-ribofuranosylpyrazolo<3,4-d>pyrimidine-3,4(2H,5H)-dione
6-amino-3-methoxy-l-β-D-ribofuranosylpyrazolo<3,4-d>pyrimidin-4(5H)-one
3-Methoxy-4,6-bis(methylthio)-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)pyrazolo<3,4-d>pyrimidine