α-Oxo-1-piperazineacetic acid691394-09-9100 % similar 1-Acetylpiperazine13889-98-043 % similar 2-(Piperazin-1-yl)-acetic acid H2O37478-58-341 % similar Piperazine-1-carboxylic acid dimethylamide41340-78-741 % similar N,N-Diethyl-1-piperazinecarboxamide119-54-039 % similar 3-Piperazin-1-yl-propionic acid27245-31-439 % similar Methyl piperazine-1-carboxylate50606-31-039 % similar 2-Methyl-1-(piperazin-1-yl)propan-1-one71260-16-739 % similar Morpholin-4-yl-piperazin-1-yl-methanone98834-08-339 % similar N-Acetylhomopiperazine61903-11-538 % similar 1-(Cyclopropylcarbonyl)piperazine Hydrochloride1021298-67-837 % similar Ethyl 1-piperazinecarboxylate120-43-437 % similar 1-Ethyl-2,3-piperazinedione59702-31-737 % similar 1-Benzoylpiperazine13754-38-636 % similar tert-Butyl piperazine-1-carboxylate57260-71-636 % similar 1-Boc-piperazine acetate143238-38-436 % similar Isonipecotic acid498-94-234 % similar 1-((Pyrrolidine-1-carbonyl)methyl)piperazine39890-45-434 % similar (Piperazin-1-yl)(tetrahydrofuran-2-yl)methanone63074-07-734 % similar Oxalic acid144-62-733 % similar