1H-Benz(de)isoquinoline-5-sulfonic acid,2,3-dihydro-2-methyl-6-(methylamino)-1,3-dioxo-,sodium salt (1:1), EINECS 277-334-0, 1H-Benz(de)isoquinoline-5-sulfonic acid,2,3-dihydro-2-methyl-6-(methylamino)-1,3-dioxo-,monosodium salt, sodium 2-methyl-6-(methylamino)-1,3-dioxo-2,3-dihydro-1h-benzo[de]isoquinoline-5-sulfonate, Sodium 2,3-dihydro-2-methyl-6-(methylamino)-1,3-dioxo-1H-benz(de)isoquinoline-5-sulphonate,