3-ethyl-2-ethylsulfanyl-1,3-benzothiazol-3-ium,iodide

2-cyano-3-ethylsulfanyl-3-sulfanylprop-2-enamide

ethyl 4-[4-(3,4-dichlorophenoxy)phenyl]-4-oxobut-2-enoate

ethyl 4-[4-(4-methylphenoxy)phenyl]-4-oxobut-2-enoate

ethyl 4-[4-(4-methoxyphenoxy)phenyl]-4-oxobut-2-enoate