Synonyms: 2-[2-[4-[(2-cyanoethyl)methylamino]phenyl]vinyl]-1,3,3-trimethyl-3H-indolium hydrogen sulphate;3H-Indolium, 2-2-4-(2-cyanoethyl)methylaminophenylethenyl-1,3,3-trimethyl-, sulfate (1:1);3H-Indolium, 2-[2-[4-[(2-cyanoethyl) methylamino] phenyl]ethenyl]-1,3,3-trimethyl-, sulfate;C.I. Basic Red 14 sulfate