Anthracene
                            Order
                            16102-99-1
                            
                                disodium 1-amino-9,10-dihydro-9,10-dioxo-4-[[4-[[2-(sulphonatooxy)ethyl]sulphonyl]phenyl]amino]anthracene-2-sulphonate
                            
                        
                        
                        
                        
                        
                        
                            Order
                            6370-93-0
                            
                                tetrasodium 9,10-dihydro-1,5-dihydroxy-9,10-dioxo-4,8-bis[(sulphonatomethyl)amino]anthracene-2,6-disulphonate