6,7-二甲氧基-2,2-二甲基-4-色满酮

7-ethoxy-6-hydroxy-2,2-dimethyl-4-chromanone

3,3-二甲基丙烯酸

1,2,4-苯三酚

7-ethoxy-2,2-dimethyl-2H-chromene-6-carbaldehyde