4-[{1-(tert-Butoxycarbonyl)piperidin-4-ylamino}methyl]benzoic acid

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

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

1-(3-Nitrophenyl)-3-(piperidin-4-yl)ureahydrochloride

tert-Butyl 4-[(2-fluoro-6-nitrophenylamino)methyl]piperidine-1-carboxylate

1-Fluoro-2-(2-methoxyethoxy)-3-nitrobenzene

4-[(4-Fluoro-2-nitrophenoxy)methyl]-1-methylpiperidine

tert-Butyl 1-(3-aminopyridin-2-yl)piperidin-4-ylcarbamate

tert-Butyl 4-(5-aminopyridin-2-ylamino)piperidine-1-carboxylate

2-Fluoro-6-(2-methoxyethoxy)aniline

(R)-tert-Butyl 3-(2-fluoro-4-nitrophenoxy)pyrrolidine-1-carboxylate