1,2-bis(3,4-dichlorophenyl)pyrazolidine-3,5-dione

5-(2,4,6-三甲基苯基)-1,3-环己二酮

cyclopent-3-ene-1,1-dicarboxylic acid

2,6-双(三氟甲基)嘧啶-4-醇

diethyl 2-octan-2-ylpropanedioate