2,2'-(Methylenebis(o-phenyleneoxymethylene))bisoxirane 54208-63-8 Bisphenol F diglycidyl ether EINECS 259-026-8 Methylenebis(o-phenol), 3-propylene oxide ether Oxirane, 2,2'-(methylenebis(2,1-phenyleneoxymethylene))bis-