Synonyms: 127820-66-0;4H-Pyrazolo(3,4-d)pyrimidin-4-one, 6-amino-1,5-dihydro-3-methyl-1-b-D-ribofuranosyl-;4H-Pyrazolo[3,4-d]pyrimidin-4-one, 6-amino-1,5-dihydro-3-methyl-1-b-D-ribofuranosyl-;AC1L9Q64;6-Amino-3-methyl-1-beta-D-ribofuranosylpyrazolo(3,4-d)pyrimidin-4(5H)-one;6-Amino-3-methyl-1-.beta.-D-ribofuranosylpyrazolo[3,4-d]pyrimidin-4(5H)-one;6-amino-1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-3-methyl-2H-pyrazolo[3,4-d]pyrimidin-4-one