1,2-bis-(4-phenyl-piperazino)-ethane

2-(2-chloroethylsulfanyl)acetic acid

Tetraethyl 1,1,4,4-butanetetracarboxylate

3-(2-pyridin-3-ylethynyl)pyridine

3-(2-chloroethyl)-5,5-dimethylimidazolidine-2,4-dione