tert-butyl 4-(3-bromo-6-chloropyridin-2-yl)piperazine-1-carboxylate

tert-butyl 4-(3-phenylpropyl)piperazine-1-carboxylate tert-Butyl 4-(4-amino-2-fluorophenyl)piperidine-1-carboxylate tert-Butyl 4-((6-bromopyridin-3-yl)methyl)piperazine-1-carboxylate tert-Butyl 4-(5-fluoro-2-nitrophenyl)-piperazine-1-carboxylate tert-butyl 4-(3-fluoro-4-nitrophenyl)piperazine-1-carboxylate

1-Piperazinecarboxylic acid, 4-(2-aMino-3-pyridinyl)-, 1,1-diMethylethyl ester 4-(2-Nitro-4-trifluoromethyl-phenyl)-piperazine-1-carboxylic acid tert-butyl ester tert-butyl 4-(2-amino-2-oxoethyl)-3-oxopiperazine-1-carboxylate 4-(5-Nitro-pyridin-2-yloxy)-piperidine-1-carboxylic acid tert-butyl ester tert-butyl 4-(4-amino-2,6-difluorophenyl)piperazine-1-carboxylate

tert-butyl 4-(4-amino-3-(trifluoromethyl)phenyl)piperazine-1-carboxylate 4-(2-HYDROXY-PROPYL)-PIPERAZINE-1-CARBOXYLIC ACID TERT-BUTYL ESTER tert-butyl 4-(5-nitro-1H-indol-3-yl)-5,6-dihydropyridine-1(2H)-carboxylate 4-(2-Amino-4-trifluoromethyl-phenyl)-piperazine-1-carboxylic acid tert-butyl ester tert-butyl 4-((6-aminopyridin-3-yl)methyl)piperazine-1-carboxylate

tert-butyl 4-(6-bromopyridin-3-yl)piperazine-1-carboxylate tert-butyl 4-(3-amino-5-(trifluoromethyl)phenyl)piperazine-1-carboxylate 1-Piperazinecarboxylic acid, 4-(4-aMino-3-pyridinyl)-, 1,1-diMethylethyl ester