4,7-dihydroxy-2H-1-benzopyran-2-one; 4,7-Dihydroxycoumarin; Coumarin,4,7-dihydroxy; 4,7-dihydroxy-2H-chromen-2-one; 4,7-Dihydroxy-cumarin; 4,7-Dihydroxy-coumarin; 4,7-dihydroxy-chromen-2-one; 4,7-Dihydroxy-2-oxo-2H-1-benzopyran; 2H-1-BENZOPYRAN-2-ONE,4,7-DIHYDROXY; 2,7-dihydroxychromen-4-one; AURORA KA-3743; 4,7-HYDROXY-COUMARIN; 2,7-dihydroxy-4H-chromen-4-one; 4,7-dihydroxycoumarin;
室温,干燥