1-Boc-2-piperazinecarboxylic acid1214196-85-6100 % similar (R)-4-Boc-piperazine-3-carboxylic acid278788-60-6100 % similar 1-[(tert-Butoxy)carbonyl]azetidine-2-carboxylic acid159749-28-768 % similar Boc-D-azetidine-2-carboxylic acid228857-58-768 % similar 1-(1,1-Dimethylethyl) 2-methyl 1,2-piperazinedicarboxylate129799-15-167 % similar Boc-L-proline15761-39-465 % similar (2R)-1-[(tert-Butoxy)carbonyl]pyrrolidine-2-carboxylic acid37784-17-165 % similar 1-[(tert-Butoxy)carbonyl]piperidine-2-carboxylic acid118552-55-964 % similar (2S)-1-((tert-Butoxy)carbonyl)piperidine-2-carboxylic acid26250-84-064 % similar (R)-(+)-N-Boc-2-piperidinecarboxylic acid28697-17-864 % similar tert-Butyl 2-methylpiperazine-1-carboxylate120737-78-263 % similar 1,1-Dimethylethyl (2S)-2-methyl-1-piperazinecarboxylate169447-70-563 % similar (R)-1-N-Boc-2-methylpiperazine170033-47-363 % similar tert-Butyl 2-(hydroxymethyl)piperazine-1-carboxylate205434-75-962 % similar 4-(tert-Butoxycarbonyl)morpholine-3-carboxylic acid212650-43-662 % similar 1,1-Dimethylethyl (2R)-2-ethyl-1-piperazinecarboxylate393781-70-960 % similar 1-(1,1-Dimethylethyl) (2S)-4-oxo-1,2-pyrrolidinedicarboxylate84348-37-858 % similar 1,1-Dimethylethyl (2S)-2-(2-methylpropyl)-1-piperazinecarboxylate674792-06-457 % similar 1-(1,1-Dimethylethyl) (2S)-4,4-dimethyl-1,2-pyrrolidinedicarboxylate1001353-87-257 % similar (2S,4S)-N-Boc-4-methylpyrrolidine-2-carboxylic acid364750-81-257 % similar