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1-tert-Butyl 3-ethyl 4-oxopyrrolidine-1,3-dicarboxylate146256-98-6100 % similar 1-tert-Butyl 4-ethyl 3-oxopiperidine-1,4-dicarboxylate71233-25-577 % similar 1-(1,1-Dimethylethyl) 3-ethyl 4-oxo-1,3-piperidinedicarboxylate98977-34-577 % similar 1-tert-Butyl 4-ethyl 5-oxoazepane-1,4-dicarboxylate141642-82-265 % similar 1-(1,1-Dimethylethyl) 3-ethyl 1,3-pyrrolidinedicarboxylate170844-49-260 % similar Ethyl N-cbz-4-oxopyrrolidine-3-carboxylate51814-19-859 % similar 1-tert-Butyl 4-ethyl piperidine-1,4-dicarboxylate142851-03-459 % similar Ethyl 1-boc-3-piperidinecarboxylate130250-54-358 % similar 1-tert-Butyl 3-methyl 4-oxopiperidine-1,3-dicarboxylate161491-24-355 % similar tert-Butyl 3-(2-ethoxy-2-oxoethyl)azetidine-1-carboxylate158602-35-852 % similar tert-Butyl 3-Cyano-4-oxo-pyrrolidine-1-carboxylate175463-32-852 % similar tert-Butyl 4-(3-ethoxy-3-oxopropanoyl)piperidine-1-carboxylate479630-08-550 % similar 1-(1,1-Dimethylethyl) 2-ethyl (2S)-5-oxo-1,2-pyrrolidinedicarboxylate144978-12-149 % similar 1-Boc-D-pyroglutamic acid ethyl ester144978-35-849 % similar 3-Ethoxycarbonylmethylene-azetidine-1-carboxylic acid tert-butyl ester1002355-96-549 % similar Ethyl 1-[(1,1-dimethylethoxy)carbonyl]-4-piperidineacetate135716-09-547 % similar 1-tert-Butyl 3-methyl azetidine-1,3-dicarboxylate610791-05-447 % similar Ethyl N-boc-4-methylpiperidine-4-carboxylate189442-87-346 % similar tert-Butyl 6-Oxa-3-azabicyclo(3.1.0)hexane-3-carboxylate114214-49-245 % similar Ethyl 1-benzyl-4-oxopyrrolidine-3-carboxylate1027-35-645 % similar