(2010/02/09)
p. 4933 - 4940
(2007/10/03)1,7-dimethyl-3-phenyl-3,7-dihydro-purine-2,6-dione
N-(6-amino-3-methyl-2,4-dioxo-1-phenyl-1,2,3,4-tetrahydro-pyrimidin-5-yl)-formamide
1-methyl-3-phenyl-3,7-dihydro-purine-2,6-dione
7-hydroxy-1,6-diphenyllumazine
1-phenyl-2,4-dioxo-5,6-diaminopyrimidine