3,6,9,12,15-Pentaoxaheptadecane 4-01-00-02404 (Beilstein Handbook Reference) 4353-28-0 BRN 1767873 Diethoxytetraethylene glycol Diethylether tetraethylenglykolu [Czech] EINECS 224-423-7 Ether, bis(2-(2-ethoxyethoxy)ethyl) Glycol, diethoxytetraethylene Tetraethylene glycol diethyl ether