3H-Indolium,1-Ethyl-3,3- Dimethyl-2-[2-(phenylamino)ethenyl]-5-Sulfo,inner salt. Suppliers, 3H-Indolium,1-Ethyl-3,3- Dimethyl-2-[2-(phenylamino)ethenyl]-5-Sulfo,inner salt. Manufacturers.