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1,1-Dimethylethyl 2-(phenylmethyl)-1-piperazinecarboxylate481038-63-551 % similar 1-tert-Butyl 3-methyl azetidine-1,3-dicarboxylate610791-05-450 % similar 1-tert-Butyl 3-methyl pyrrolidine-1,3-dicarboxylate122684-33-749 % similar (S)-1-Boc-pyrrolidine-3-carboxylic acid methyl ester313706-15-949 % similar 1-tert-Butyl 3-methyl (3R)-pyrrolidine-1,3-dicarboxylate441717-40-449 % similar tert-Butyl piperazine-1-carboxylate57260-71-649 % similar Methyl N-boc-piperidine-3-carboxylate148763-41-148 % similar Hexahydro-pyrrolo[3,4-B]pyrrole-1-carboxylic acid tert-butyl ester185693-02-147 % similar 1-tert-Butyl 3-methyl 4-oxopiperidine-1,3-dicarboxylate161491-24-346 % similar 1-[(tert-Butoxy)carbonyl]azetidine-2-carboxylic acid159749-28-746 % similar 1,2-Bis(1,1-dimethylethyl) (2S)-4-oxo-1,2-pyrrolidinedicarboxylate166410-05-546 % similar 3-(N-tert-Butoxycarbonyl-N-methylamino)pyrrolidine172478-00-146 % similar Boc-D-azetidine-2-carboxylic acid228857-58-746 % similar 1-Boc-L-azetidine-2-carboxylic acid51077-14-646 % similar 1,1-Dimethylethyl (2R)-2-(((2,5-dioxo-1-pyrrolidinyl)oxy)carbonyl)-1-pyrrolidinecarboxylate102185-34-245 % similar 1-O-tert-Butyl 2-O-(2,5-dioxopyrrolidin-1-yl) (2S)-pyrrolidine-1,2-dicarboxylate3392-10-745 % similar tert-Butyl 1,4-diazepane-1-carboxylate112275-50-045 % similar Boc-L-proline15761-39-444 % similar (2R)-1-[(tert-Butoxy)carbonyl]pyrrolidine-2-carboxylic acid37784-17-144 % similar 1-[(tert-Butoxy)carbonyl]pyrrolidine-2-carboxylic acid59433-50-044 % similar