ethyl 1,2-dibenzyl-3,5-dioxopyrazolidine-4-carboxylate

ethyl 2,3-dibenzyl-3-(ethoxycarbonylacetyl)carbazate

6-n-heptadecenylsalicylic acid

N,N'-二(2-吡啶亚甲基)乙二胺

1,2-bis-(benzenesulfonyl-benzyl-amino)-ethane