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1,1-Dimethylethyl (2S)-2-(2-methylpropyl)-1-piperazinecarboxylate674792-06-4100 % similar 1,1-Dimethylethyl (2R)-2-ethyl-1-piperazinecarboxylate393781-70-971 % similar tert-Butyl 2-(hydroxymethyl)piperazine-1-carboxylate205434-75-970 % similar tert-Butyl 2-methylpiperazine-1-carboxylate120737-78-267 % similar 1,1-Dimethylethyl (2S)-2-methyl-1-piperazinecarboxylate169447-70-567 % similar (R)-1-N-Boc-2-methylpiperazine170033-47-367 % similar (S)-1-Boc-2-isopropylpiperazine674792-05-365 % similar 1,1-Dimethylethyl (2S)-2-(phenylmethyl)-1-piperazinecarboxylate169447-86-361 % similar 1,1-Dimethylethyl 2-(phenylmethyl)-1-piperazinecarboxylate481038-63-561 % similar 1-Boc-2-piperazinecarboxylic acid1214196-85-657 % similar (R)-4-Boc-piperazine-3-carboxylic acid278788-60-657 % similar 1-(1,1-Dimethylethyl) 2-methyl 1,2-piperazinedicarboxylate129799-15-156 % similar (S)-1-N-Boc-piperazine-2-carboxylic acid methyl ester796096-64-556 % similar 3,6-Diazabicyclo[3.1.1]heptane-6-carboxylic acid tert-butyl ester869494-16-655 % similar 3-(N-tert-Butoxycarbonyl-N-methylamino)pyrrolidine172478-00-153 % similar (1S,4S)-2-Boc-2,5-diazabicyclo[2.2.1]heptane113451-59-552 % similar tert-Butyl 2,5-diazabicyclo[2.2.1]heptane-2-carboxylate hydrochloride134003-84-252 % similar 2,5-Diaza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester198989-07-052 % similar tert-Butyl 3,8-diazabicyclo[3.2.1]octane-8-carboxylate149771-44-851 % similar tert-Butyl N-methyl-N-(piperidin-3-yl)carbamate172478-01-250 % similar