2-hydroxy-1-(4-methylsulfanylphenyl)-2-pyridin-4-ylethanone

5-pyridin-4-ylpentanoic acid

ethyl N-(pyridin-4-ylmethylideneamino)carbamodithioate

butyl N-(pyridin-4-ylmethylideneamino)carbamodithioate

2-ethylsulfonyl-5-(1-oxidopyridin-1-ium-4-yl)-1,3,4-thiadiazole