3-甲基吲哚-2-甲酸乙酯

5-三氟甲基吲哚-2-羧酸乙酯

ethyl 1-(4-methylphenyl)-1,2,4-triazole-3-carboxylate

1-氰基环己烷羧酸乙酯

ethyl 5-(2,2-dimethylpropyl)-1,3-oxazole-4-carboxylate