5-tert-butyl-2-hydroxy-3-(piperazin-1-ylmethyl)benzaldehyde

3,3'-(piperazine-1,4-diylbis(methylene))bis(5-(tert-butyl)-2-hydroxybenzaldehyde)

6,9-diazoniadispiro[5.2.5⁹.2⁶]hexadecane,diiodide

1-[3-(4-Fluorophenoxy)propyl]piperazine

1-[2-(5-chlorothiophen-2-yl)ethenylsulfonyl]piperazine