1,8-Diaminooctane 1,8-Octamethylenediamine 1,8-Octanediamine 1,8-Octylenediamine 3-04-00-00612 (Beilstein Handbook Reference) 373-44-4 7613-16-3 BRN 1735426 EINECS 206-764-3 Octamethylenediamine