Pteridine
                            Order
                            647826-56-0
                            
                                1H-Pyrrolo[3,2-g]pteridine-2,4(3H,8H)-dione,8-(1,1-dimethylethyl)-1,3-dimethyl-7-phenyl-
                            
                        
                        
                            Order
                            112290-80-9
                            
                                Benzo[g]pteridine-2,4(1H,3H)-dione,7-chloro-8,10-dihydro-8-(1-hydroxyethylidene)-10-methyl-