1H-Pyrazolo(4,3-d)pyrimidin-7(6H)-one, 3-methyl-6-(alpha-methylbenzyl)- 3-Methyl-6-(alpha-methylbenzyl)-1H-pyrazolo(4,3-d)pyrimidin-7(6H)-one 7H-Pyrazolo(4,3-d)pyrimidin-7-one, 1,6-dihydro-3-methyl-6-(1-phenylethyl)- 86927-77-7