5-piperidin-1-ylspiro[benzimidazole-2,1'-cyclohexane]

5,6-dipiperidinoisobenzimidazole-2-spirocyclohexane

1-ethyl-1-[6-(1-ethylpiperidin-1-ium-1-yl)hexyl]piperidin-1-ium,diiodide

N-(2-chloroethyl)benzenesulfonamide

piperidine-1-carboxylic acid p-tolyl ester