1-Cyclopentylpiperazine21043-40-332 % similar 1-Methylpiperazine dihydrochloride34352-59-532 % similar 4-Aminopiperidine dihydrochloride35621-01-332 % similar Isopropylpiperazine4318-42-732 % similar 4-Cyanopiperidine4395-98-632 % similar 4-Hydroxypiperidinium chloride5382-17-232 % similar 4-Chloropiperidine hydrochloride5382-19-432 % similar 4-Bromopiperidine hydrobromide54288-70-932 % similar 4-Fluoropiperidine hydrochloride57395-89-832 % similar 4-(Trifluoromethyl)piperidine657-36-332 % similar Ethyl 4-(methylamino)-1-piperidinecarboxylate73733-69-431 % similar 4-Benzylpiperidine31252-42-331 % similar 1-Methyl-4-(piperidin-4-yl)piperazine53617-36-031 % similar 1-Cyclopropylpiperazine dihydrochloride139256-79-431 % similar 1-Cyclohexylpiperazine17766-28-831 % similar 1-Cycloheptylpiperazine21043-42-531 % similar 1-Cyclooctylpiperazine21043-43-631 % similar 1-Methylhomopiperazine4318-37-031 % similar 4-(1-Pyrrolidinyl)piperidine5004-07-931 % similar 1-Boc-4-methylaminopiperidine147539-41-131 % similar