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3-Oxo-azetidine-1-carboxylic acid tert-butyl ester398489-26-441 % similar N-Boc-cis-2,6-diethyl-4-piperidone1003843-30-841 % similar tert-Butyl (2S)-2-(hydroxymethyl)azetidine-1-carboxylate161511-85-941 % similar tert-Butyl 2-(hydroxymethyl)azetidine-1-carboxylate174346-82-841 % similar 9-Boc-7-oxa-9-azabicyclo[3.3.1]nonan-3-one280761-97-941 % similar tert-Butyl N-methyl-N-(4-oxocyclohexyl)carbamate400899-84-541 % similar N-Boc-9-azabicyclo[3.3.1]nonan-3-one512822-27-441 % similar 1,1-Dimethylethyl 9-oxo-3-azaspiro[5.5]undecane-3-carboxylate873924-08-441 % similar Methyl 3-oxocyclopentane-1-carboxylate32811-75-940 % similar 1,1-Dimethylethyl (2S)-2-formyl-1-pyrrolidinecarboxylate69610-41-940 % similar N-(tert-Butoxycarbonyl)-D-prolinal73365-02-340 % similar 2-((2R)-1-((tert-Butoxy)carbonyl)pyrrolidin-2-yl)acetic acid101555-60-640 % similar (S)-2-(1-BOC-2-pyrrolidinyl)acetic acid56502-01-340 % similar (S)-4-Methylene-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester84348-38-940 % similar Methyl 4-[(1,1-dimethylethoxy)carbonyl]-2-piperazineacetate183742-33-839 % similar (S)-1-N-Boc-2-(aminomethyl)pyrrolidine119020-01-839 % similar tert-Butyl 2-methylpiperazine-1-carboxylate120737-78-239 % similar 1,1-Dimethylethyl (2S)-2-methyl-1-piperazinecarboxylate169447-70-539 % similar (R)-1-N-Boc-2-methylpiperazine170033-47-339 % similar tert-Butyl 2-(hydroxymethyl)pyrrolidine-1-carboxylate170491-63-139 % similar