1,4-oxazine
                            Order
                            1192355-14-8
                            
                                tert-Butyl7-amino-4-oxo-3,4-dihydrospiro[benzo[e][1,3]oxazine-2,4'-piperidine]-1'-carboxylate
                            
                        
                        
                            Order
                            883984-95-0
                            
                                Benzyl 7'-chloro-2'-oxo-1',2'-dihydrospiro[piperidine-4,4'-pyrido[2,3-d][1,3]oxazine]-1-carboxylate
                            
                        
                        
                        
                        
                            Order
                            691868-46-9
                            
                                6-BROMO-4-OXO-3,4-DIHYDROSPIRO(2H)-BENZO(E)[1,3]OXAZINE-2,4-PIPERIDINE TRIFLUOROACETIC ACID SALT
                            
                        
                        
                        
                        
                        
                            Order
                            1206102-11-5
                            
                                (4R,12aS)-N-(2,4-difluorobenzyl)-7-benzylhydroxy-4-methyl-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2H-pyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazine-9-carboxamide
                            
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                            Order
                            1246616-73-8
                            
                                (4R,12aS)-7-hydroxy-4-methyl-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2H-pyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazine-9-carboxylic acid