EINECS 308-202-3, 6-imino-4-oxo-5-[2-[3-(2-sulfonatooxyethylsulfonyl)phenyl]hydrazinyl]naphthalene-2-sulfonate, Dipotassium 6-amino-4-hydroxy-5-((3-((2-(sulphonatooxy)ethyl)sulphonyl)phenyl)azo)naphthalene-2-sulphonate, DIPOTASSIUM 6-AMINO-4-HYDROXY-5-[[3-[[2-(SULFONATOOXY)ETHYL]SULFONYL]PHENYL]AZO]NAPHTHALENE-2-SULFONATE,