Dihydrogen (ethyl)[4-[4-[ethyl(3-sulphonatobenzyl)amino](4-hydroxy-2-sulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene](3-sulphonatobenzyl)ammonium, disodium salt (CI 42053)
Diidrogeno (etil)[4-[4-[etil(3-solfonatobenzil)ammino](4-idrossi-2-solfonatobenzidrilidene]cicloesa-2,5-dien-1-ilidene](3-solfonatobenzil)ammonio, sale bisodico (CI 42053)