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tert-Butyl N-(azetidin-3-yl)carbamate hydrochloride217806-26-333 % similar 1-Boc-3-(aminomethyl)azetidine325775-44-833 % similar tert-Butyl (3-hydroxycyclobutyl)carbamate389890-43-133 % similar 1,1-Dimethylethyl 3-acetyl-1-azetidinecarboxylate870089-49-933 % similar (5S)-1,5-Dimethylpiperazin-2-one1068149-94-933 % similar Di-tert-butyl iminodiacetate85916-13-833 % similar Methyl (S)-2-(boc-amino)-3-[(S)-2-oxo-3-pyrrolidinyl]propanoate328086-60-832 % similar N-Boc-cis-4-hydroxy-L-proline methyl ester102195-79-932 % similar (2R,4R)-4-Hydroxy-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester114676-69-632 % similar 1-tert-Butyl 2-methyl (2S,4R)-4-aminopyrrolidine-1,2-dicarboxylate121148-00-332 % similar 1-(1,1-Dimethylethyl) 2-methyl 1,2-piperazinedicarboxylate129799-15-132 % similar Ethyl 1-boc-3-piperidinecarboxylate130250-54-332 % similar 1-tert-Butyl 2-methyl (2R,4S)-4-hydroxypyrrolidine-1,2-dicarboxylate135042-17-032 % similar 1-tert-Butyl 3-ethyl 4-oxopyrrolidine-1,3-dicarboxylate146256-98-632 % similar 1-tert-Butyl 3-methyl 4-oxopiperidine-1,3-dicarboxylate161491-24-332 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S,4S)-4-fluoro-1,2-pyrrolidinedicarboxylate203866-16-432 % similar (2S,4R)-1-tert-Butyl 2-methyl 4-fluoropyrrolidine-1,2-dicarboxylate203866-18-632 % similar 1-tert-Butyl 2-methyl (2R,4S)-4-aminopyrrolidine-1,2-dicarboxylate254881-77-132 % similar tert-Butyl N-[(2S)-1-oxo-3-phenylpropan-2-yl]carbamate72155-45-432 % similar (2S,4R)-4-Hydroxypyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester74844-91-032 % similar