2-羟基甲基-1,4-苯二恶

2-methyl-1,4-benzodioxine-3-carboxylic acid

2,3-二氢-1,4-苯并二英-2-碳酰氯

1,4-苯并二烷-2-羧酸

N-methyl-2,3-dihydro-1,4-benzodioxine-3-carboxamide