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1-Boc-2-piperazinecarboxylic acid1214196-85-645 % similar (R)-4-Boc-piperazine-3-carboxylic acid278788-60-645 % similar 1,1-Dimethylethyl (2S)-2-(2-methylpropyl)-1-piperazinecarboxylate674792-06-445 % similar Hexahydro-pyrrolo[3,4-B]pyrrole-1-carboxylic acid tert-butyl ester185693-02-145 % similar (S)-1-N-Boc-3-isopropylpiperazine475272-54-945 % similar tert-Butyl3-((methylamino)methyl)azetidine-1-carboxylate1049730-81-544 % similar 3-(N-Boc-methylaminomethyl)azetidine1053655-53-044 % similar tert-Butyl 3,8-diazabicyclo[3.2.1]octane-8-carboxylate149771-44-844 % similar 3,6-Diazabicyclo[3.1.1]heptane-6-carboxylic acid tert-butyl ester869494-16-644 % similar 1,1-Dimethylethyl (2R)-2-ethyl-1-piperazinecarboxylate393781-70-944 % similar 1-[(tert-Butoxy)carbonyl]azetidine-2-carboxylic acid159749-28-743 % similar Boc-D-azetidine-2-carboxylic acid228857-58-743 % similar 1-Boc-L-azetidine-2-carboxylic acid51077-14-643 % similar 1,1-Dimethylethyl 3,8-diazabicyclo[3.2.1]octane-3-carboxylate201162-53-043 % similar 1-Boc-3-methylaminoazetidine454703-20-943 % similar 3-Boc-3-methylaminoazatidine577777-20-943 % similar tert-Butyl 6-Oxa-3-azabicyclo(3.1.0)hexane-3-carboxylate114214-49-243 % similar N-Boc-cis-4-hydroxy-D-proline135042-12-543 % similar 1-(1,1-Dimethylethyl) (2S,4R)-4-hydroxy-1,2-pyrrolidinedicarboxylate13726-69-743 % similar (2R,4S)-N-Alpha-T-butoxycarbonyl-4-hydroxypyrrolidine-2-carboxylic acid147266-92-043 % similar