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1-Benzylpiperazin-2-one59702-21-5100 % similar 1-Benzyl-2-pyrrolidinone5291-77-058 % similar 1-Benzoylpiperazine13754-38-651 % similar Benzyl piperazine-1-carboxylate31166-44-649 % similar 1-Benzylpiperazine2759-17-349 % similar 1-Benzylpiperazine2759-28-649 % similar Benzoylpiperazine hydrochloride56227-55-548 % similar Benzyl 1,4-diazepane-1-carboxylate117009-97-945 % similar 4-Benzylpiperazine hydrochloride110475-31-545 % similar 1-Benzyl-1,4-diazepane4410-12-245 % similar Benzylpiperazine dihydrochloride5321-63-145 % similar N-Benzyl-2,3-azetidinedione75986-07-144 % similar 5-Oxo-1-(phenylmethyl)-3-pyrrolidinecarboxylic acid5733-86-842 % similar 1-(2-Chloro-benzoyl)-piperazine13754-45-542 % similar 1-Benzyl-4-piperidone3612-20-241 % similar 1-(2-Phenylethyl)piperazine5321-49-341 % similar 1-Methylpiperazin-2-one59702-07-741 % similar 4-Benzyl-2-hydroxy-morpholin-3-one287930-73-840 % similar 1-(Phenylmethyl)-3-pyrrolidinone775-16-640 % similar Methyl 1-benzyl-5-oxo-3-pyrrolidinecarboxylate51535-00-340 % similar