Ethyl 2-(benzylamino)-4-methylpyrimidine-5-carboxylate

6-甲基-2-氧代-1,2,3,4-四氢嘧啶-5-羧酸乙酯

5-甲基-1-苯基-1H-吡唑-4-甲酸乙酯

ethyl 3-methyl-1-phenylpyrazole-4-carboxylate

2-氨基-4-甲基嘧啶-5-羧酸乙酯