diethyl 4-ethenylcyclohexene-1,4-dicarboxylate

5-乙酰基-2,4,6(1H,3H,5H)-嘧啶三酮

[4-(4-bromophenyl)phenyl] benzenesulfonate

2-methyl-3-oxidoquinazolin-3-ium

骆驼蓬酸