1-(1-Adamantyl)piperazine19984-46-4100 % similar 1-tert-Butylpiperazine38216-72-741 % similar 1-Cyclopropylpiperazine20327-23-533 % similar N-(1-Adamantyl)ethylenediamine37818-93-231 % similar 1-(Cyclohexylmethyl)piperazine57184-23-331 % similar 1-Cyclopentylpiperazine21043-40-331 % similar Isopropylpiperazine4318-42-731 % similar 1-(Oxetan-3-yl)piperazine1254115-23-530 % similar 1-Cyclopropylpiperazine dihydrochloride139256-79-430 % similar 1-Cyclohexylpiperazine17766-28-830 % similar 1-Cycloheptylpiperazine21043-42-530 % similar 1-Cyclooctylpiperazine21043-43-630 % similar