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N,N-Diethyl-1-piperazinecarboxamide119-54-0100 % similar N,N,N′,N′-Tetraethylurea1187-03-765 % similar Piperazine-1-carboxylic acid dimethylamide41340-78-761 % similar Morpholin-4-yl-piperazin-1-yl-methanone98834-08-359 % similar 1-Acetylpiperazine13889-98-048 % similar Ethyl 1-piperazinecarboxylate120-43-445 % similar 1-Ethyl-2,3-piperazinedione59702-31-745 % similar Tetrabutylurea4559-86-845 % similar 1-Ethylpiperazine5308-25-844 % similar Methyl piperazine-1-carboxylate50606-31-044 % similar 2-Methyl-1-(piperazin-1-yl)propan-1-one71260-16-744 % similar N-Acetylhomopiperazine61903-11-542 % similar 1,1'-Carbonyldipyrrolidine81759-25-342 % similar N,N-Diethyl-2-(piperazin-1-yl)ethan-1-amine4038-92-041 % similar Diethylcarbamazine citrate1642-54-240 % similar tert-Butyl piperazine-1-carboxylate57260-71-640 % similar α-Oxo-1-piperazineacetic acid691394-09-939 % similar 1-(3-Diethylaminopropyl)piperazine22764-55-239 % similar 1-Ethylhomopiperazine3619-73-639 % similar N,N-Diethylacetamide685-91-638 % similar