Pteridine
                            Order
                            346709-25-9
                            
                                Pyrimido[5,4-g]pteridine-2,4,6,8-tetramine, 4-methylbenzenesulfonate, base-hydrolysed
                            
                        
                        
                        
                        
                        
                        
                        
                        
                            Order
                            112290-80-9
                            
                                Benzo[g]pteridine-2,4(1H,3H)-dione,7-chloro-8,10-dihydro-8-(1-hydroxyethylidene)-10-methyl-