2-[(2,5-dimethylphenyl)methylsulfonyl]-1-oxidopyridin-1-ium

2-[(2,6-dichlorophenyl)methylsulfinyl]-1-oxidopyridin-1-ium

2-[1-(4-chlorophenyl)ethylsulfanyl]-1-oxidopyridin-1-ium

2-[1-(4-chlorophenyl)ethylsulfonyl]-1-oxidopyridin-1-ium

2-[[1-(2,5-二甲基苯基)乙基]磺酰基]吡啶 1-氧化物