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tert-Butyl 4-benzylpiperazine-1-carboxylate57260-70-5100 % similar 1-N-Boc-4-(phenylamino)piperidine125541-22-259 % similar tert-Butyl 3-Benzylpiperazine-1-carboxylate502649-29-855 % similar 4-(2-Amino-ethyl)-piperazine-1-carboxylic acid tert-butyl ester192130-34-055 % similar tert-Butyl 4-(2-hydroxyethyl)piperazine-1-carboxylate77279-24-455 % similar 4-[(1,1-Dimethylethoxy)carbonyl]-α-phenyl-1-piperazineacetic acid347186-49-654 % similar 1,1-Dimethylethyl 1-pyrrolidinecarboxylate86953-79-953 % similar 1-Boc-4-methylpiperazine53788-49-153 % similar N-Boc-piperazine57260-71-653 % similar 4-Boc-1-piperazineacetic acid156478-71-652 % similar (S)-(-)-1-Benzyl-3-(boc-amino)pyrrolidine131852-53-452 % similar (3R)-(+)-1-Benzyl-3-(tert-butoxycarbonylamino)pyrrolidine131878-23-452 % similar 1-Boc-4-(2-carboxyphenyl)piperazine444582-90-552 % similar 1,1-Dimethylethyl 1-piperidinecarboxylate75844-69-851 % similar tert-Butyl 1,4-diazepane-1-carboxylate112275-50-051 % similar 3-(4-(tert-Butoxycarbonyl)piperazin-1-yl)propanoic acid242459-97-851 % similar 4-(4-Aminophenyl)piperazine-1-carboxylic acid tert-butyl ester170911-92-951 % similar tert-Butyl 4-(4-bromophenyl)piperazine-1-carboxylate352437-09-351 % similar 1,1-Dimethylethyl (2S)-2-(phenylmethyl)-1-piperazinecarboxylate169447-86-351 % similar 1,1-Dimethylethyl 2-(phenylmethyl)-1-piperazinecarboxylate481038-63-551 % similar