(2-(2,2-Dicyano-1-hydroxyvinyloxy)ethyl)trimethylammonium hydroxide, inner salt 73664-04-7 AMMONIUM, (2-(2,2-DICYANO-1-HYDROXYVINYLOXY)ETHYL)TRIMETHYL-, HYDROXIDE, inner s Ammonium, (2-(2,2-dicyano-1-hydroxyvinyloxy)ethyl)trimethyl-, hydroxide, inner salt