Pyridinium
                            Order
                            570412-84-9
                            
                                4-tert-Butyl-1-(3-sulfopropyl)pyridiniuM Hydroxide Inner Salt [for BiocheMical Research]
                            
                        
                        
                            Order
                            10189-42-1
                            
                                1-[2-[[4-[[2,6-dichloro-4-[(dimethylamino)sulphonyl]phenyl]azo]phenyl]ethylamino]ethyl]pyridinium chloride
                            
                        
                        
                        
                            Order
                            68929-03-3
                            
                                1-[2-[[4-[[2,5-dichloro-4-[(dimethylamino)sulphonyl]phenyl]azo]phenyl]ethylamino]ethyl]pyridinium acetate
                            
                        
                        
                            Order
                            229016-75-5
                            
                                4-[2-[[(6R,7R)-7-Amino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]thio]-4-thiazolyl]-1-methyl-pyridinium chloride
                            
                        
                        
                            Order
                            14408-20-9
                            
                                1-[2-[[4-[(2,6-dichloro-4-nitrophenyl)azo]phenyl]ethylamino]ethyl]pyridinium chloride
                            
                        
                        
                            Order
                            102772-66-7
                            
                                1-[[(6R,7R)-7-[[(2Z)-2-(2-AMino-4-thiazolyl)-2-[[2-(1,1-diMethylethoxy)-1,1-diMethyl-2-oxoethoxy]iMino]acetyl]aMino]-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]Methyl]pyridiniuM Inner Salt
                            
                        
                        
                        
                            Order
                            400827-70-5
                            
                                Pyridinium,4-[2-[[(6R,7R)-2-[(diphenylmethoxy)carbonyl]-8-oxo-7-[(2-?phenylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]thio]-4-thiazolyl]-1-methyl-,iodide(1:1)
                            
                        
                        
                        
                        
                        
                            Order
                            547718-92-3
                            
                                1-Hexyl-3-methyl-pyridinium 1,1,1-trifluoro-N-[(trifluoromethyl)sulfonyl]methanesulfonamide