1H-Pyrazolo(4,3-d)pyrimidin-7(6H)-one, 6-isopentyl-3-methyl- 6-Isopentyl-3-methyl-1H-pyrazolo(4,3-d)pyrimidin-7(6H)-one 7H-Pyrazolo(4,3-d)pyrimidin-7-one, 1,6-dihydro-3-methyl-6-(3-methylbutyl)- 80030-87-1 BRN 4450349