N-(4-Nitrobenzyl)piperidine-4-amine dihydrochloride

tert-Butyl 4-(3-ethylureido)piperidine-11-carboxylate

tert-Butyl 4-(2-hydroxy-2-methylpropanamido)piperidine-1-carboxylate

tert-Butyl 4-(3-bromophenylsulfonamido)piperidine-1-carboxylate

tert-Butyl 4-[3-(2-bromophenyl)ureido]piperidine-1-carboxylate

tert-Butyl 4-[3-(4-nitrophenyl)ureido]piperidine-1-carboxylate

1-(2-Bromophenyl)-3-(piperidin-4-yl)ureahydrochloride

1-(2-Methoxyphenyl)-3-(piperidin-4-yl)urea hydrochloride

1-(2-Aminophenyl)piperidin-4-ol

Ethyl 1-(2-aminophenyl)piperidine-4-carboxylate

(R)-tert-Butyl 3-(4-nitrophenoxy)pyrrolidine-1-carboxylate