ethyl 4'-chloro-4-ethyl-6-fluoro-3-hydroxy-5-methylbiphenyl-2-carboxylate

ethyl 4-ethyl-4',6-difluoro-3-hydroxy-5-methylbiphenyl-2-carboxylate

ethyl 3-ethyl-5-fluoro-2-hydroxy-4-methyl-6-(1-naphthyl)benzoate

ethyl 3-ethyl-5-fluoro-2-hydroxy-6-(2-naphthyl)-4-propylbenzoate

ethyl 4-ethyl-3-hydroxy-5-methyl-2'-nitrobiphenyl-2-carboxylate