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1-Boc-3-oxopiperazine76003-29-7100 % similar 5-Oxo-(1,4)diazepane-1-carboxylic acid tert-butyl ester190900-21-175 % similar N-Boc-piperazine57260-71-663 % similar tert-Butyl 1,4-diazepane-1-carboxylate112275-50-056 % similar 3-Oxopyrrolidine-1-carboxylic acid tert-butyl ester101385-93-755 % similar 1,1-Dimethylethyl 1-pyrrolidinecarboxylate86953-79-954 % similar N-Boc-3-methylene-piperidine276872-89-054 % similar tert-Butyl 4,7-diazaspiro(2.5)octane-7-carboxylate886766-28-554 % similar tert-Butyl 3-oxoazetidine-1-carboxylate398489-26-453 % similar 1,1-Dimethylethyl 1-piperidinecarboxylate75844-69-853 % similar N-(tert-Butoxycarbonyl)iminodiacetic Acid56074-20-553 % similar tert-Butyl 3-methylidenepyrrolidine-1-carboxylate114214-71-053 % similar tert-Butyl 3-methylpiperazine-1-carboxylate120737-59-952 % similar (S)-4-N-Boc-2-methylpiperazine147081-29-652 % similar (R)-4-Boc-2-methylpiperazine163765-44-452 % similar tert-Butyl 2,8-diazaspiro[4.5]decane-2-carboxylate336191-17-452 % similar tert-Butyl 2-oxo-1,7-diazaspiro(3.5)nonane-7-carboxylate392331-78-152 % similar tert-Butyl 3,9-diazaspiro[5.5]undecane-3-carboxylate173405-78-251 % similar 1-Boc-piperazine acetate143238-38-451 % similar Tetrt-butyl5-methyl-1,4-diazepane-1-carboxylate194032-42-351 % similar