30546-08-8 6H-Purine-6-thione, 2-amino-9-butyl-1,9-dihydro- 9-BTG 9-Butyl-6-thioguanine 9H-Purine-6(1H)-thione, 2-amino-9-butyl- 9H-Purine-6-thiol, 2-amino-9-butyl- NSC39336 PC 246 SK 25531