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1-Boc-2-piperazinecarboxylic acid1214196-85-638 % similar (R)-4-Boc-piperazine-3-carboxylic acid278788-60-638 % similar 4-N-Boc-4-N-methyl-aminopiperidine108612-54-038 % similar 4-Thiocarbamoyl-piperazine-1-carboxylic acid tert-butyl ester196811-66-238 % similar tert-Butyl 1,2,3-oxathiazolidine-3-carboxylate 2,2-dioxide459817-82-438 % similar 1-Boc-1-methylhydrazine21075-83-238 % similar tert-Butyl 3-carbamoylpyrrolidine-1-carboxylate122684-34-838 % similar Tetrt-butyl5-methyl-1,4-diazepane-1-carboxylate194032-42-338 % similar tert-Butyl 4-carbamothioylpiperidine-1-carboxylate214834-18-138 % similar tert-Butyl (2R,5S)-2,5-dimethylpiperazine-1-carboxylate309915-46-638 % similar (2S,5R)-2,5-Dimethyl-piperazine-1-carboxylic acid tert-butyl ester548762-66-938 % similar Boc-L-pyroglutaminol81658-25-538 % similar 1-(1,1-Dimethylethyl) (2S)-4-oxo-1,2-pyrrolidinedicarboxylate84348-37-838 % similar 1-(tert-Butoxycarbonyl)-4-oxopyrrolidine-2-carboxylic acid876317-19-038 % similar tert-Butyl 3-bromoazetidine-1-carboxylate1064194-10-038 % similar 1-N-Boc-3-hydroxyazetidine141699-55-038 % similar 1-Boc-4-methylenepiperidine159635-49-138 % similar (3R,4S)-tert-Butyl 3,4-dihydroxypyrrolidine-1-carboxylate186393-22-638 % similar tert-Butyl 3-iodoazetidine-1-carboxylate254454-54-138 % similar tert-Butyl (2-bromoethyl)(methyl)carbamate263410-12-438 % similar