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(S)-1-Boc-2-isopropylpiperazine674792-05-3100 % similar tert-Butyl 2-methylpiperazine-1-carboxylate120737-78-272 % similar 1,1-Dimethylethyl (2S)-2-methyl-1-piperazinecarboxylate169447-70-572 % similar (R)-1-N-Boc-2-methylpiperazine170033-47-372 % similar 1,1-Dimethylethyl (2S)-2-(2-methylpropyl)-1-piperazinecarboxylate674792-06-465 % similar 1,1-Dimethylethyl (2R)-2-ethyl-1-piperazinecarboxylate393781-70-964 % similar tert-Butyl 2-(hydroxymethyl)piperazine-1-carboxylate205434-75-963 % similar Hexahydro-pyrrolo[3,4-B]pyrrole-1-carboxylic acid tert-butyl ester185693-02-162 % similar 1-Boc-2-piperazinecarboxylic acid1214196-85-661 % similar (R)-4-Boc-piperazine-3-carboxylic acid278788-60-661 % similar 1-(1,1-Dimethylethyl) 2-methyl 1,2-piperazinedicarboxylate129799-15-160 % similar (S)-1-N-Boc-piperazine-2-carboxylic acid methyl ester796096-64-560 % similar 1,1-Dimethylethyl (2S)-2-(phenylmethyl)-1-piperazinecarboxylate169447-86-355 % similar 1,1-Dimethylethyl 2-(phenylmethyl)-1-piperazinecarboxylate481038-63-555 % similar N-Boc-piperazine57260-71-654 % similar 3-(N-tert-Butoxycarbonyl-N-methylamino)pyrrolidine172478-00-150 % similar tert-Butyl (2R,6S)-2,6-dimethylpiperazine-1-carboxylate180975-66-050 % similar tert-Butyl 1,4-diazepane-1-carboxylate112275-50-049 % similar tert-Butyl (2R,5S)-2,5-dimethylpiperazine-1-carboxylate309915-46-648 % similar (S)-1-N-Boc-3-isopropylpiperazine475272-54-948 % similar