5-formyl-6-hydroxy-4-methylcoumarin

5-hydroxy-4-methyl-2-oxo-2H-chromene-6-carbaldehyde

5-羟基-4-甲基-2H-1-苯并吡喃-2-酮

6-hydroxy-5-methoxy-4-methyl-coumarin

6-acetyl-5-hydroxy-4-methyl-coumarin