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7-(1,1-Dimethylethyl) 7-azaspiro[3.5]nonane-2,7-dicarboxylate873924-12-055 % similar tert-Butyl 3,9-diazaspiro[5.5]undecane-3-carboxylate173405-78-254 % similar 1-Boc-4-formyl-4-methyl-piperidine189442-92-054 % similar 1,1-Dimethylethyl 9-oxo-3-azaspiro[5.5]undecane-3-carboxylate873924-08-454 % similar (2S)-1-(tert-Butoxycarbonyl)-2-methylpyrrolidine-2-carboxylic acid103336-06-753 % similar (R)-Boc-2-methylproline166170-15-653 % similar 1-[(tert-Butoxy)carbonyl]-2-methylpyrrolidine-2-carboxylic acid203869-80-153 % similar 1-Boc-4-spiro-[3-(2-pyrrolidinone)] piperidine268550-48-753 % similar 1,1-Dimethylethyl 3-oxo-2,8-diazaspiro[4.5]decane-8-carboxylate169206-67-153 % similar N-Boc-N,N-bis(2-chloroethyl)amine118753-70-153 % similar 1-Boc-4-methylpiperazine53788-49-153 % similar tert-Butyl piperazine-1-carboxylate57260-71-653 % similar tert-Butyl 4-oxopiperidine-1-carboxylate79099-07-353 % similar tert-Butyl 4-hydroxypiperidine-1-carboxylate109384-19-253 % similar 4-Boc-1-piperazineacetic acid156478-71-652 % similar 1-(tert-Butoxycarbonyl)-4-piperidinecarboxylic acid174316-71-352 % similar tert-Butyl 4-cyano-4-methylpiperidine-1-carboxylate530115-96-952 % similar N-Boc-piperidine-4-carboxylic acid84358-13-452 % similar 7-Boc-7-azaspiro[3.5]nonane-2-methanol1356476-27-152 % similar 1,1-Dimethylethyl 2,4-dioxo-1,3,8-triazaspiro[4.5]decane-8-carboxylate183673-70-352 % similar