3-甲氧基儿茶酚

2,3-diphenyl-5-methoxybenzo-1,4-dioxin

2-溴-2-苯基乙酰苯

2a,8a-dihydro-2a,8a-diphenyl-4-methoxybenzo(b)(1,2)dioxeto(3,4e)(1,4)dioxin