| —— | 
                                        2,3,6,7,10,11-Hexahydro-4H,8H,9H-benzo<1,2-b:3,4-b':6,5-b''>tripyran-4,8,9-trion | 
                                        76804-31-4 | 
                                        C15H12O6 | 
                                        288.257 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        2,3,6,7,10,11-Hexahydro-4H,8H,9H-benzo<1,2-b:3,4-b':6,5-b''>tripyran-4-on | 
                                        76804-29-0 | 
                                        C15H16O4 | 
                                        260.29 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        2,3,4,5,6,7-Hexahydrobenzo<1,2-b:4,3-b'>dipyran-9-yl(3-oxypropionsaeure) | 
                                        76804-26-7 | 
                                        C15H18O5 | 
                                        278.305 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        10-Hydroxy-2,3,6,7-tetrahydro-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4,8-dion | 
                                        76804-27-8 | 
                                        C12H10O5 | 
                                        234.208 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        2,3,6,7,10,11-Hexahydro-4H,8H,9H-benzo<1,2-b:3,4-b':6,5-b''>tripyran | 
                                        76804-32-5 | 
                                        C15H18O3 | 
                                        246.306 |