Purine
                            Order
                            61328-78-7
                            
                                1H-Purine-8-acetamide,N-ethyl-2,3,6,7-tetrahydro-3,7-dimethyl-2,6-dioxo-1-(phenylmethyl)-
                            
                        
                        
                        
                        
                            Order
                            90266-54-9
                            
                                1H-Purine-2,6-dione,8-[2-[bis(1-methylethyl)amino]ethoxy]-3,7-dihydro-1,3,7-trimethyl-,(2E)-2-butenedioate (1:1)
                            
                        
                        
                            Order
                            61328-73-2
                            
                                1H-Purine-8-acetic acid,2,3,6,7-tetrahydro-3,7-dimethyl-2,6-dioxo-1-(phenylmethyl)-, methylester
                            
                        
                        
                        
                        
                            Order
                            148727-25-7
                            
                                Pyrimido(2,1-f)purine-2,4(1H,3H)-dione, 6,7,8,9-tetrahydro-1,3-dimethyl-9-(4-(4-phenyl-1-piperazinyl)butyl)-
                            
                        
                        
                        
                        
                        
                        
                            Order
                            35899-39-9
                            
                                7-[3-[[2-(3,5-Dihydroxyphenyl)-2-hydroxyethyl]amino]butyl]-3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione
                            
                        
                        
                            Order
                            61328-82-3
                            
                                1H-Purine-8-acetamide,2,3,6,7-tetrahydro-N,N,3,7-tetramethyl-2,6-dioxo-1-(phenylmethyl)-
                            
                        
                        
                        
                        
                        
                            Order
                            612039-97-1
                            
                                1H-Purine-2,6-dione,  9-[2-(2,4-dichlorophenyl)-2-oxoethyl]-3,9-dihydro-1,3-dimethyl-
                            
                        
                        
                        
                            Order
                            178452-78-3
                            
                                6H-(1,3)Thiazino(2,3-f)purine-3(2H)-acetic acid, 1,4,7,8-tetrahydro-2,4-dioxo-1-methyl-, butyl ester
                            
                        
                        
                            Order
                            61329-02-0
                            
                                1H-Purine-2,6-dione,8-[(diethylamino)methyl]-1-ethyl-3,7-dihydro-3,7-dimethyl-,monohydrochloride