1H-Benz(de)isoquinoline-5-sulfonic acid, 2,3-dihydro-2-methyl-6-(methylamino)-1,3-dioxo-, monosodium salt 1H-Benz(de)isoquinoline-5-sulfonic acid, 2-methyl-6-(methylamino)-1,3-dioxo-2,3-dihydro-, sodium salt 73263-39-5 EINECS 277-334-0 Sodium 2,3-dihydro-2-methyl-6-(methylamino)-1,3-dioxo-1H-benz(de)isoquinoline-5-sulphonate