diethyl 1H-1,2-benzodiazepine-3,4-dicarboxylate

ethyl 5-ethoxy-1-phenylpyrazole-3-carboxylate

1-羟基-2-甲氧基蒽醌

diethyl 2-(dimethoxyphosphoryl)-3-(9,10-dihydro-1-hydroxy-9,10-dioxoanthracen-2-yloxy)butanedioate