7-Azabicyclo[2,2,1]heptane hydrochloride27514-07-430 % similar 3-Azetidinol45347-82-830 % similar Piperidinium chloride6091-44-730 % similar 2,5-Dihydro-1H-pyrrole hydrochloride63468-63-330 % similar Diethylammonium chloride660-68-430 % similar 3-Fluoroazethidine690257-76-230 % similar