Synonyms:
2-[7-(1,3-dihydro-1,3,3-trimethyl-5-sulfo-2h-indol-2-ylidene)-1,3,5-heptatrienyl]-1,3,3-trimethyl-5-sulfo-3h-indolium inner salt sodium salt monohydrate ; acid blue-green dye ; 3h-indolium, 2-[7-(1,3-dihydro-1,3,3-trimethyl-5-sulfo-2h-indol-2-ylidene)-1,3,5-heptatrienyl]-1,3,3-trimethyl-5-sulfo-, inner salt, sodium salt, monohydrate ; sodium 1,3,3-trimethyl-2-[(1e,3e,5e)-7-(1,3,3-trimethyl-5-sulfonato-1,3-dihydro-2h-indol-2-ylidene)-1,3,5-heptatrienyl]-3h-indolium-5-sulfonate hydrate
