27455-40-9 5-18-08-00317 (Beilstein Handbook Reference) 6-(6-Chloro-4-oxo-4H-1-benzopyran-2-carboxamido)hexanoic acid BRN 1398777 HEXANOIC ACID, 6-(6-CHLORO-4-OXO-4H-1-BENZOPYRAN-2-CARBOXAMIDO)-