Undecylamine7307-55-330 % similar 1,3-Diaminopropane dihydrochloride10517-44-930 % similar 1-Aminopyrrolidine16596-41-130 % similar Putrescine dihydrochloride333-93-730 % similar 4-Aminomethyl-1-N-butylpiperidine65017-57-430 % similar