1,4-Diazepan-5-one34376-54-0100 % similar 4-Piperidinone41661-47-645 % similar 4-Piperidone hydrochloride41979-39-940 % similar Piperazine adipate142-88-137 % similar 3-Pyrazolidinone hydrochloride1752-88-137 % similar Piperazine-2,3-dione13092-86-936 % similar 3-Pyrrolidinone96-42-436 % similar 4-Piperidone hydrochloride hydrate320589-77-336 % similar 1,7-Bis-boc-1,4,7-triazaheptane117499-16-835 % similar Piperazine110-85-033 % similar Aziridine151-56-433 % similar Cyclen294-90-633 % similar 1-Methyl-3-oxopiperazine34770-60-033 % similar 1,4,7-Triazacyclononane4730-54-533 % similar Polyethylenimine9002-98-633 % similar 3-Pyrrolidinone, hydrochloride (1:1)3760-52-932 % similar 2-Imidazolidone hemihydrate121325-67-532 % similar 5-Oxo-(1,4)diazepane-1-carboxylic acid tert-butyl ester190900-21-132 % similar