(2-(Diphenylmethoxy)ethyl)trimethylammonium bromide 31065-89-1 Diphenhydramine methylbromide EINECS 250-451-4 ETHYLAMINE, N,N-DIMETHYL-2-(DIPHENYLMETHOXY)-, METHYLBROMIDE Ethylamine, 2-(diphenylmethoxy)-N,N-dimethyl-, methylbromide