S-(+)-N-去甲基美芬妥英

(R)-(-)-苯乙基内酰脲

美芬妥英

5-ethyl-3-methylsulfonyl-5-phenylimidazolidine-2,4-dione

3-苄基-5-乙基-5-苯基-2,4-咪唑烷二酮