1,1-Dimethylethyl (2S)-2-(2-methylpropyl)-1-piperazinecarboxylate674792-06-4100 % similar 1,1-Dimethylethyl (2R)-2-ethyl-1-piperazinecarboxylate393781-70-971 % similar tert-Butyl 2-methylpiperazine-1-carboxylate120737-78-267 % similar 1,1-Dimethylethyl (2S)-2-methyl-1-piperazinecarboxylate169447-70-567 % similar 1,1-Dimethylethyl (2S)-2-(phenylmethyl)-1-piperazinecarboxylate169447-86-361 % similar 1,1-Dimethylethyl 2-(phenylmethyl)-1-piperazinecarboxylate481038-63-561 % similar 1-Boc-2-piperazinecarboxylic acid1214196-85-657 % similar 1-(1,1-Dimethylethyl) 2-methyl 1,2-piperazinedicarboxylate129799-15-156 % similar (1S,4S)-2-Boc-2,5-diazabicyclo[2.2.1]heptane113451-59-552 % similar tert-Butyl 3,8-diazabicyclo[3.2.1]octane-8-carboxylate149771-44-851 % similar N-Boc-piperazine57260-71-650 % similar tert-Butyl 2-(2-hydroxyethyl)piperidine-1-carboxylate118811-03-347 % similar (S)-1-N-Boc-2-(aminomethyl)pyrrolidine119020-01-846 % similar tert-Butyl 2-(hydroxymethyl)pyrrolidine-1-carboxylate170491-63-146 % similar 4-N-Boc-4-N-methyl-aminopiperidine108612-54-046 % similar tert-Butyl 1,4-diazepane-1-carboxylate112275-50-046 % similar Hexahydropyrrolo[3,4-C]pyrrole-2-carboxylic acid tert-butyl ester141449-85-643 % similar 2-((2R)-1-((tert-Butoxy)carbonyl)pyrrolidin-2-yl)acetic acid101555-60-643 % similar (2S)-1-[(1,1-Dimethylethoxy)carbonyl]-2-pyrrolidineacetic acid56502-01-343 % similar tert-Butyl 3-methylpiperazine-1-carboxylate120737-59-943 % similar