1H-Pyrazolo(3,4-d)pyrimidin-4-one, 4,5-dihydro-5-(alpha-methylphenethyl)- 5-(alpha-Methylphenethyl)-4,5-dihydro-1H-pyrazolo(4,5-d)pyrimidin-4-one 69398-32-9 BRN 1127895