1,4-Bis(2-cyanoethoxy)butane 1,4-Butanediol bis(2-cyanoethyl) ether 1,4-Butylene glycol bis(2-cyanoethyl) ether 1,4-Butylenglykol-di-(2-cyanoaethyl)-aether [German] 18664-94-3 3,3'-(Butane-1,4-diylbis(oxy))bispropiononitrile 3,3'-(Tetramethylenedioxy)dipropionitrile 4-03-00-00715 (Beilstein Handbook Reference) BRN 1766803 EINECS 242-485-3 Propanenitrile, 3,3'-(1,4-butanediylbis(oxy))bis- Propionitrile, 3,3'-(tetramethylenedioxy)di- (6CI,7CI,8CI)