tert-Butyl 4-(3-fluoro-2-nitrophenylamino)piperidine-1-carboxylate

tert-Butyl 4-(2-nitrobenzylamino)piperidine-1-carboxylate

tert-Butyl 4-(4-methoxybenzamido)piperidine-1-carboxylate

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

tert-Butyl 1-(3-fluoro-2-nitrophenyl)piperidine-4-ylcarbamate

tert-Butyl 1-(5-nitropyridine-2-yl)piperidine-4-ylcarbamate

4-Fluoro-2-nitro-1-(pentan-3-yloxy)benzene

2-Fluoro-1-(2-methoxyethoxy)-4-nitrobenzene

tert-Butyl 4-(4-bromobenzamido)piperidine-1-carboxylate

1-Ethyl-3-(piperidin-4-yl)urea hydrochloride

1-Cyclohexyl-3-(piperidin-4-yl)urea hydrochloride