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tert-Butyl 4-(2-ethoxy-2-oxoethylidene)piperidine-1-carboxylate135716-08-4100 % similar 3-Ethoxycarbonylmethylene-azetidine-1-carboxylic acid tert-butyl ester1002355-96-576 % similar tert-Butyl 4-oxopiperidine-1-carboxylate79099-07-354 % similar 1-tert-Butyl 4-ethyl piperidine-1,4-dicarboxylate142851-03-453 % similar Ethyl N-boc-4-methylpiperidine-4-carboxylate189442-87-353 % similar 1-tert-Butyl 4-ethyl 5-oxoazepane-1,4-dicarboxylate141642-82-253 % similar 1-Boc-4-methylenepiperidine159635-49-152 % similar Ethyl cyclohexylideneacetate1552-92-751 % similar Ethyl 1-[(1,1-dimethylethoxy)carbonyl]-4-piperidineacetate135716-09-551 % similar 1-(1,1-Dimethylethyl) 3-ethyl 4-oxo-1,3-piperidinedicarboxylate98977-34-551 % similar 1,1-Dimethylethyl 1-pyrrolidinecarboxylate86953-79-950 % similar tert-Butyl 3-methylidenepyrrolidine-1-carboxylate114214-71-049 % similar N-Boc-hexahydro-1H-azepin-4-one188975-88-449 % similar 1,1-Dimethylethyl 1-piperidinecarboxylate75844-69-849 % similar tert-Butyl 4-(3-ethoxy-3-oxopropanoyl)piperidine-1-carboxylate479630-08-548 % similar 1-(1,1-Dimethylethyl) 3-ethyl 1,3-pyrrolidinedicarboxylate170844-49-248 % similar 3-Oxopyrrolidine-1-carboxylic acid tert-butyl ester101385-93-748 % similar Ethyl 1-boc-3-piperidinecarboxylate130250-54-347 % similar tert-Butyl 3-(2-ethoxy-2-oxoethyl)azetidine-1-carboxylate158602-35-847 % similar 5-Oxo-(1,4)diazepane-1-carboxylic acid tert-butyl ester190900-21-147 % similar