ethyl 4-ethoxycarbothioylsulfanyl-3-oxobutanoate

ethyl 4-(3-tert-butylphenoxy)-3-oxobutanoate

5-[(3-tert-butylphenoxy)methyl]-1,2-dihydropyrazol-3-one

ethyl 2-(6,7-dimethylimidazo[2,1-b][1,3]benzothiazol-2-yl)acetate

ethyl 2-acetamido-4-(chloromethyl)-1,3-thiazole-5-carboxylate