ethyl 4,4-diethoxybutanoate

9-环己基腺嘌呤

(E)-2-氰基-3-乙氧基丙烯酸乙酯

1,3-二甲基-2,4,6-三氧代-六氢-嘧啶-5-甲醛

1,3,1',3'-tetramethyl-5,5'-methanylylidene-bis-pyrimidine-2,4,6-trione