2-Naphthalenesulfonicacid,4-hydroxy-6-[(1-oxo-2-propen-1-yl)amino]-,sodium salt (1:1), SODIUM 4-HYDROXY-6-[(1-OXOALLYL)AMINO]NAPHTHALENE-2-SULFONATE, Sodium 4-hydroxy-6-((1-oxoallyl)amino)naphthalene-2-sulphonate, EINECS 279-150-6, 2-Naphthalenesulfonicacid,4-hydroxy-6-[(1-oxo-2-propenyl)amino]-,monosodium salt (9CI), sodium 4-hydroxy-6-(prop-2-enoylamino)naphthalene-2-sulfonate