1-tert-Butyl 3-methyl piperazine-1,3-dicarboxylate129799-08-2100 % similar 1-(1,1-Dimethylethyl) 3-methyl (3S)-1,3-piperazinedicarboxylate314741-39-4100 % similar 1-(1,1-Dimethylethyl) 3-methyl (3R)-1,3-piperazinedicarboxylate438631-77-7100 % similar 4-[(tert-Butoxy)carbonyl]piperazine-2-carboxylic acid128019-59-067 % similar Methyl 4-[(1,1-dimethylethoxy)carbonyl]-2-piperazineacetate183742-33-863 % similar 1-tert-Butyl 3-methyl pyrrolidine-1,3-dicarboxylate122684-33-762 % similar tert-Butyl 3-methylpiperazine-1-carboxylate120737-59-961 % similar 1-tert-Butyl 3-methyl azetidine-1,3-dicarboxylate610791-05-460 % similar 1-(1,1-Dimethylethyl) 4-methyl 1,4-piperidinedicarboxylate124443-68-158 % similar 3-Methyl 1-(phenylmethyl) 1,3-piperazinedicarboxylate129799-11-758 % similar 1,1-Dimethylethyl (3S)-3-(hydroxymethyl)-1-piperazinecarboxylate314741-40-757 % similar N-Boc-piperazine57260-71-652 % similar 1-(1,1-Dimethylethyl) 2-methyl 1,2-piperazinedicarboxylate129799-15-152 % similar 1,1-Dimethylethyl (3S)-3-(methylamino)-1-pyrrolidinecarboxylate147081-59-248 % similar tert-Butyl 1,4-diazepane-1-carboxylate112275-50-048 % similar 1-(1,1-Dimethylethyl) 3-ethyl 1,3-pyrrolidinedicarboxylate170844-49-247 % similar (S)-3-Hydroxypyrrolidine-1-carboxylic acid tert-butyl ester101469-92-547 % similar 3-Hydroxypyrrolidine-1-carboxylic acid tert-butyl ester103057-44-947 % similar tert-Butyl (3R)-3-hydroxypyrrolidine-1-carboxylate109431-87-047 % similar (R)-tert-Butyl 3-aminopyrrolidine-1-carboxylate147081-49-047 % similar