1,2-Ethanediamine, N,N-dimethyl-N'-2-pyridinyl-N'-(2-thienylmethyl)-, (E)-2-butenedioate (2:3) 2-((2-(Dimethylamino)ethyl)-2-thenylamino)pyridine fumarate (2:3) 33032-12-1 EINECS 251-351-3 Metapyrilene fumarate Methapyrilene fumarate Pyridine, 2-((2-(dimethylamino)ethyl)-2-thenylamino)-, fumarate (2:3) Thenylpyramine fumarate