56330-12-2 6-Quinazolinesulfonic acid, 2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)-1,4-dihydro-4-oxo-, monosodium salt EINECS 260-115-9 Sodium 2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)-1,4-dihydro-4-oxoquinazoline-6-sulphonate