... ,10-tetrahydroxy-2-(hydroxymethyl)-9-methoxypyrano[3,2-c][2]benzopyran-6(2H)-one; BERGENIN; 3, ... -methoxy-3,4,4a,10b-tetrahydropyrano[3,2-c]isochromen-6(2H)-one; (2R,3S,4S, ... 9-methoxy-3,4,4a,10b-tetrahydropyrano[3,2-c]isochromen-6(2H)-one BergeninMolecular formula: C14H16O9Molecular weight ... : 328.28C.A.S number : 477-90-7 Formulation: Loose white ...