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tert-Butyl 2,6-Diazaspiro(3.3)heptane-2-carboxylate Hemioxalate1041026-71-452 % similar 1,1-Dimethylethyl 1-pyrrolidinecarboxylate86953-79-951 % similar cis-tert-Butyl 5-oxohexahydrocyclopenta[c]pyrrole-2(1H)-carboxylate146231-54-151 % similar N-Boc-hexahydro-5-oxocyclopenta[C]pyrrole148404-28-851 % similar 7-Boc-2-oxa-7-azaspiro[3.5]nonane240401-27-851 % similar 1,1-Dimethylethyl 7-oxo-2,6-diazaspiro[3.4]octane-2-carboxylate1234616-51-351 % similar 2,7-Diaza-spiro[4.4]nonane-2-carboxylic acid tert-butyl ester236406-49-851 % similar 1-Boc-4-methylenepiperidine159635-49-150 % similar N-(tert-Butoxycarbonyl)-2,5-dihydro-1H-pyrrole73286-70-150 % similar 1,1-Dimethylethyl 1-piperidinecarboxylate75844-69-850 % similar tert-Butyl 2,7-diazaspiro[3.5]nonane-7-carboxylate896464-16-750 % similar 3-Oxo-1-oxa-8-aza-spiro[4.5]decane-8-carboxylic acid tert-butyl ester954236-44-349 % similar 1,1-Dimethylethyl 3-(aminomethyl)-3-hydroxy-1-azetidinecarboxylate1008526-71-349 % similar tert-Butyl 3,9-diazaspiro[5.5]undecane-3-carboxylate173405-78-249 % similar 1-(tert-Butoxycarbonyl)-3,3-dimethyl-4-oxopiperidine324769-06-449 % similar tert-Butyl N-methyl-N-(4-oxocyclohexyl)carbamate400899-84-549 % similar tert-Butyl 4,4-difluoropiperidine-1-carboxylate281652-10-649 % similar tert-Butyl 4,7-diazaspiro(2.5)octane-7-carboxylate886766-28-548 % similar tert-Butyl 1-oxa-6-azaspiro(2.5)octane-6-carboxylate147804-30-648 % similar 1-Boc-4-methyl-piperidin-4-OL406235-30-148 % similar