S-butyl 2-hydroxy-2-phenylethanethioate

S-benzyl 2-hydroxy-2-phenylethanethioate

methyl 3-(2-hydroxy-2-phenylacetyl)sulfanylpropanoate

1-phenyl-2-(pyrrolidine-1-yl)ethane-1,2-dione

1-phenyl-2-diethylamino-ethane-1,2-dione