27455-36-3 4H-1-BENZOPYRAN-2-CARBOXANILIDE, 6-CHLORO-4-OXO-4'-(2-PYRIDYLSULFAMOYL)- 6-Chloro-4-oxo-4'-(2-pyridylsulfamoyl)-4H-1-benzopyran-2-carboxanilide BRN 0462682