tert-Butyl 3-oxoazetidine-1-carboxylate398489-26-456 % similar 1,1-Dimethylethyl 2-oxo-1-pyrrolidinecarboxylate85909-08-654 % similar tert-Butyl 2-oxopiperidine-1-carboxylate85908-96-953 % similar tert-Butyl 4-oxopiperidine-1-carboxylate79099-07-349 % similar tert-Butyl 6-oxo-2-azaspiro(3.3)heptane-2-carboxylate1181816-12-546 % similar 1,2-Bis(1,1-dimethylethyl) (2S)-4-oxo-1,2-pyrrolidinedicarboxylate166410-05-545 % similar 1,1-Dimethylethyl 1-pyrrolidinecarboxylate86953-79-944 % similar N-(tert-Butoxycarbonyl)-2,5-dihydro-1H-pyrrole73286-70-143 % similar 1,1-Dimethylethyl 1-piperidinecarboxylate75844-69-843 % similar 1-(1,1-Dimethylethyl) (2S)-4-oxo-1,2-pyrrolidinedicarboxylate84348-37-843 % similar N-Boc-cis-2,6-diethyl-4-piperidone1003843-30-843 % similar 1,1-Dimethylethyl N-methyl-N-(4-oxocyclohexyl)carbamate400899-84-543 % similar 1,1-Dimethylethyl 9-oxo-3-azaspiro[5.5]undecane-3-carboxylate873924-08-443 % similar 1-tert-Butyl 2-methyl (2S)-4-oxopyrrolidine-1,2-dicarboxylate102195-80-242 % similar [(tert-Butoxycarbonyl)(methyl)amino]acetic acid13734-36-641 % similar tert-Butyl 6-Oxa-3-azabicyclo(3.1.0)hexane-3-carboxylate114214-49-241 % similar N-Boc-N,N-bis(2-chloroethyl)amine118753-70-141 % similar 1,1-Dimethylethyl 3,3-difluoro-1-azetidinecarboxylate1255666-59-141 % similar N-Boc-piperazine57260-71-641 % similar tert-Butyl 2-methyl-4-oxopiperidine-1-carboxylate190906-92-441 % similar