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1-Ethylsulfonyl-piperazine62937-96-6100 % similar 1-Methanesulfonyl-piperazine55276-43-250 % similar 1-(1-Piperidinylsulfonyl)piperazine500587-48-443 % similar 2-(1-(Ethylsulfonyl)azetidin-3-ylidene)acetonitrile1187595-85-238 % similar 1-(4-Chloro-benzenesulfonyl)-piperazine16017-53-138 % similar 1-[(4-Methylphenyl)sulfonyl]piperazine27106-51-038 % similar 1-Benzenesulfonyl-piperazine14172-55-537 % similar 1-Ethylpiperazine5308-25-836 % similar 1-Propylpiperazine21867-64-134 % similar Methylpiperazine109-01-333 % similar N,N-Diethyl-2-(piperazin-1-yl)ethan-1-amine4038-92-033 % similar 1-[2-(Dipropylamino)ethyl]piperazine496808-01-633 % similar N,N-Diethyl-1-piperazinecarboxamide119-54-032 % similar 1-Butylpiperazine5610-49-132 % similar 1-Acetylpiperazine13889-98-031 % similar 1-(3-Diethylaminopropyl)piperazine22764-55-231 % similar 1-Ethylhomopiperazine3619-73-631 % similar 1-Propylpiperazine dihydrobromide64262-23-331 % similar Ethyl sulfone597-35-331 % similar Ethyl 1-piperazinecarboxylate120-43-431 % similar