1H-Benzimidazolesulfonic acid, 2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)-, monosodium salt 70267-73-1 C.I. Yellow 184, sodium salt EINECS 274-520-3 Sodium 2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)-1H-benzimidazolesulphonate