3-Ethyl-2-(2-(1-ethyl-2,5-dimethyl-1H-pyrrol-3-yl)vinyl)benzoxazolium chloride 63149-22-4 Benzoxazolium, 3-ethyl-2-(2-(1-ethyl-2,5-dimethyl-1H-pyrrol-3-yl)ethenyl)-, chloride EINECS 263-960-1