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1-(1,1-Dimethylethyl) 3-ethyl 4-oxo-1,3-piperidinedicarboxylate98977-34-5100 % similar 1-tert-Butyl 4-ethyl 5-oxoazepane-1,4-dicarboxylate141642-82-280 % similar 1-tert-Butyl 3-ethyl 4-oxopyrrolidine-1,3-dicarboxylate146256-98-677 % similar 1-tert-Butyl 3-methyl 4-oxopiperidine-1,3-dicarboxylate161491-24-373 % similar 1-tert-Butyl 4-ethyl 3-oxopiperidine-1,4-dicarboxylate71233-25-567 % similar 1-(1,1-Dimethylethyl) 3-ethyl 1,3-pyrrolidinedicarboxylate170844-49-264 % similar Ethyl 1-boc-3-piperidinecarboxylate130250-54-363 % similar 1-tert-Butyl 4-ethyl piperidine-1,4-dicarboxylate142851-03-460 % similar tert-Butyl 3-methyl-4-oxopiperidine-1-carboxylate181269-69-259 % similar 3-Bromo-4-oxo-piperidine-1-carboxylic acid tert-butyl ester188869-05-857 % similar tert-Butyl 3-fluoro-4-oxopiperidine-1-carboxylate211108-50-857 % similar tert-Butyl 3-cyano-4-oxopiperidine-1-carboxylate914988-10-654 % similar tert-Butyl 4-(2-ethoxy-2-oxoethylidene)piperidine-1-carboxylate135716-08-451 % similar tert-Butyl 4-(3-ethoxy-3-oxopropanoyl)piperidine-1-carboxylate479630-08-551 % similar 1-(1,1-Dimethylethyl) 2-ethyl (2S)-5-oxo-1,2-pyrrolidinedicarboxylate144978-12-150 % similar 1-Boc-D-pyroglutamic acid ethyl ester144978-35-850 % similar tert-Butyl 3-(2-ethoxy-2-oxoethyl)azetidine-1-carboxylate158602-35-850 % similar Ethyl 1-[(1,1-dimethylethoxy)carbonyl]-4-piperidineacetate135716-09-548 % similar 1-tert-Butyl 3-methyl pyrrolidine-1,3-dicarboxylate122684-33-747 % similar Ethyl N-boc-4-methylpiperidine-4-carboxylate189442-87-347 % similar