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tert-Butyl 3,9-diazaspiro[5.5]undecane-3-carboxylate173405-78-253 % similar 1-Boc-4-formyl-4-methyl-piperidine189442-92-053 % similar 4-Acetyl-piperidine-1-carboxylic acid tert-butyl ester206989-61-953 % similar tert-Butyl 4-(chloromethyl)piperidine-1-carboxylate479057-79-953 % similar 1-(tert-Butoxycarbonyl)-4-(2-hydroxyethyl)piperidine89151-44-053 % similar 3-Bromo-4-oxo-piperidine-1-carboxylic acid tert-butyl ester188869-05-853 % similar tert-Butyl 3-fluoro-4-oxopiperidine-1-carboxylate211108-50-853 % similar tert-Butyl 4-(2-ethoxy-2-oxoethylidene)piperidine-1-carboxylate135716-08-452 % similar tert-Butyl 6-Oxa-3-azabicyclo(3.1.0)hexane-3-carboxylate114214-49-251 % similar 1,1-Dimethylethyl 3,3-difluoro-1-azetidinecarboxylate1255666-59-151 % similar tert-Butyl 3,6-dihydropyridine-1(2H)-carboxylate85838-94-451 % similar 4-(2-Aminoethyl)-1-boc-piperidine146093-46-151 % similar 4-Boc-1-piperazineacetic acid156478-71-651 % similar 1-(tert-Butoxycarbonyl)-4-piperidinecarboxylic acid174316-71-351 % similar 1-Boc-4-methylpiperidine-4-carboxylic acid189321-63-951 % similar 1-Boc-4-ethynylpiperidine287192-97-651 % similar tert-Butyl 4-cyano-4-methylpiperidine-1-carboxylate530115-96-951 % similar N-Boc-piperidine-4-carboxylic acid84358-13-451 % similar 1-(tert-Butoxycarbonyl)piperidine-4-carboxamide91419-48-651 % similar tert-Butyl 4-cyanopiperidine-1-carboxylate91419-52-251 % similar