Methyl 4-[(1,1-dimethylethoxy)carbonyl]-2-piperazineacetate183742-33-8100 % similar 1,1-Dimethylethyl (3S)-3-(hydroxymethyl)-1-piperazinecarboxylate314741-40-765 % similar 1-tert-Butyl 3-methyl piperazine-1,3-dicarboxylate129799-08-263 % similar 1-(1,1-Dimethylethyl) 3-methyl (3S)-1,3-piperazinedicarboxylate314741-39-463 % similar 1-(1,1-Dimethylethyl) 3-methyl (3R)-1,3-piperazinedicarboxylate438631-77-763 % similar tert-Butyl 3-methylpiperazine-1-carboxylate120737-59-959 % similar 4-[(tert-Butoxy)carbonyl]piperazine-2-carboxylic acid128019-59-054 % similar 1,1-Dimethylethyl (3S)-3-(methylamino)-1-pyrrolidinecarboxylate147081-59-252 % similar 1-tert-Butyl 3-methyl pyrrolidine-1,3-dicarboxylate122684-33-750 % similar 1,1-Dimethylethyl 3,8-diazabicyclo[3.2.1]octane-3-carboxylate201162-53-050 % similar N-Boc-piperazine57260-71-650 % similar 1-tert-Butyl 3-methyl azetidine-1,3-dicarboxylate610791-05-448 % similar 1-(1,1-Dimethylethyl) 4-methyl 1,4-piperidinedicarboxylate124443-68-146 % similar tert-Butyl 1,4-diazepane-1-carboxylate112275-50-046 % similar Ethyl 1-[(1,1-dimethylethoxy)carbonyl]-4-piperidineacetate135716-09-545 % similar 3-Hydroxypyrrolidine-1-carboxylic acid tert-butyl ester103057-44-945 % similar tert-Butyl (3R)-3-hydroxypyrrolidine-1-carboxylate109431-87-045 % similar (R)-tert-Butyl 3-aminopyrrolidine-1-carboxylate147081-49-045 % similar Hexahydropyrrolo[3,4-C]pyrrole-2-carboxylic acid tert-butyl ester141449-85-644 % similar tert-Butyl 6-Oxa-3-azabicyclo(3.1.0)hexane-3-carboxylate114214-49-243 % similar