3,4,5-三甲氧基苯甲酰氯

2,6-二甲氧基对苯二酚

硫酸二甲酯

ethyl 2-(1-hydroxy-2,6-dimethoxy-4-oxocyclohexa-2,5-dien-1-yl)-2-methoxyacetate

ethyl 2-methoxy-2-(1,2,6-trimethoxy-4-oxocyclohexa-2,5-dien-1-yl)acetate