1-Formylisonipecotic acid84163-42-831 % similar 1-(1-Piperidinylsulfonyl)piperazine500587-48-431 % similar 1-Cyclopentylpiperazine21043-40-331 % similar tert-Butyl 1,4-diazepane-1-carboxylate112275-50-031 % similar Norspermidine56-18-831 % similar Piperidine110-89-430 % similar Azepane111-49-930 % similar Azocane1121-92-230 % similar 1,4,8,12-Tetraazacyclopentadecane15439-16-430 % similar Cyclam295-37-430 % similar 1,4-Diazacycloheptane505-66-830 % similar 1-Cyclohexylpiperazine17766-28-830 % similar 1-Cycloheptylpiperazine21043-42-530 % similar 1-Cyclooctylpiperazine21043-43-630 % similar