ethyl 4-(difluoromethoxy)benzoate

ethyl 3-(diethylaminomethyl)-4-hydroxybenzoate

ethyl 4-hydroxy-3-(morpholin-4-ylmethyl)benzoate

8-(羟基甲基)-1,4-二噁螺[4.5]癸烷-8-羧酸乙酯

ethyl 2,2-dimethylchroman-6-carboxylate