乙酸酐

1,3-dibenzyl-2-phenyl-1,3,2-diazaphospholidine-4,5-dione 2-oxide

ethyl N,N'-dibenzyl-4,5-dioxoimidazolidine-2-carboxylate

E-4-carbomethoxymethylen-3-methyl-1-phenyl-5-pyrazolone

苄基氯