2-(2-(Acetylphenylamino)vinyl)-3-ethyl-5-sulphonatobenzoxazolium 68083-28-3 Anhydro-2-(2-(N-acetanilido)vinyl)-3-ethyl-5-sulfobenzoxazolium hydroxide Benzoxazolium, 2-(2-(acetylphenylamino)ethenyl)-3-ethyl-5-sulfo-, inner salt EINECS 268-377-6