Pyridinium
                            Order
                            823201-83-8
                            
                                Pyridinium,1-[(3-bromo-5-chloro-2-pyridinyl)[(4-methoxyphenyl)sulfonyl]amino]-,chloride
                            
                        
                        
                            Order
                            447462-13-7
                            
                                Pyridinium,3-[[(4S)-2,2-dimethyl-4-(phenylmethyl)-3-oxazolidinyl]carbonyl]-1-methyl-, bromide
                            
                        
                        
                            Order
                            863406-60-4
                            
                                Pyridinium,1-[2-[2-[4-(dicyanomethylene)-2,6-dimethyl-1(4H)-pyridinyl]ethoxy]ethyl]-, chloride
                            
                        
                        
                        
                        
                        
                        
                        
                            Order
                            823201-88-3
                            
                                Pyridinium,1-[(3-bromo-5-chloro-2-pyridinyl)[(4-nitrophenyl)sulfonyl]amino]-,chloride
                            
                        
                        
                            Order
                            676125-32-9
                            
                                1H-Imidazo[4,5-b]pyridinium,4-[[(6R,7R)-7-[[(2Z)-(5-amino-1,2,4-thiadiazol-3-yl)(ethoxyimino)acetyl]amino]-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-1-[3-[[(1,1-dimethylethoxy)carbonyl]methylamino]propyl]-, iodide
                            
                        
                        
                        
                        
                            Order
                            444559-70-0
                            
                                Pyridinium,1-[11-[[(1S)-1-(ethoxycarbonyl)-5-[(1-oxododecyl)amino]pentyl]amino]-11-oxoundecyl]-, bromide
                            
                        
                        
                            Order
                            27918-50-9
                            
                                Pyridinium,1-[[[4-[(hydroxyimino)methyl]pyridinio]methoxy]methyl]-3-(methylthio)-,chloride (1:2)
                            
                        
                        
                        
                            Order
                            69705-63-1
                            
                                Pyridinium, 4-(aminocarbonyl)-1-[[2-carboxy-8-oxo-7-[(phenylsulfoacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-, [6R-(6α,7β)]-
                            
                        
                        
                        
                            Order
                            423770-68-7
                            
                                Pyridinium,4-[(1E)-2-[4-(dimethylamino)phenyl]ethenyl]-1-(2,4-dinitrophenyl)-,hexafluorophosphate(1-)
                            
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                            Order
                            89744-41-2
                            
                                Pyridinium,1-methyl-3-[[[2-[5-(phenylmethoxy)-1H-indol-3-yl]ethyl]amino]carbonyl]-,iodide
                            
                        
                        
                            Order
                            27918-56-5
                            
                                3-(methylsulfanyl)-1-[({4-[(oxoammonio)methylidene]pyridin-1(4H)-yl}methoxy)methyl]pyridinium dichloride