1-[(4-Methylquinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-bromoxanthine

8-Bromo-7-(2-butyn-1-yl)-3,7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]-1H-purine-2,6-dione

8-BroMo-7-but-2-ynyl-3-Methyl-1-(4-Methyquinazolin-2-ylMethyl)-3,7-dihydro-purine-2,6-dione

8-broMo-7-(but-2-ynyl)-3-Methyl-1-((4-Methylquinazolin-2-yl)Methyl)-1H-purine-2,6(3H,7H)-dione

8-BroMo-7-(2-butyn-a-yl)-3,7-dihydro-3-Methyl-1-[(4-Methyl-2-quinazolinyl)Methyl]-1H-purine-2,6-dione

8-Bromo-7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquin-azolin-2-yl)methyl)-1H-purine-2,6(3H,7H)-dion