2,3-Dihydro-benzo[1,4]dioxine-6-sulfonyl chloride2,3-dihydro-1,4-benzodioxine-6-sulfonyl chloride6-(Chlorosulphonyl)-2,3-dihydro-1,4-benzodioxine2,3-Dihydro-1,4-benzodioxine-6-sulphonyl chloride2,3-二氢-1,4-苯并二噁英-6-磺酰氯2,3-Dihydro-1,4-benzodioxine-6-sulfonyl chloride1,4-Benzodioxan-6-sulfonyl chloride苯并-1,4-二噁烷-6-磺酰氯1,4-Benzodioxane-6-sulfonyl chloride1,4-苯并二氧杂环乙烷-6-磺酰氯2,3-dihydrobenzo[b][1,4]dioxine-6-sulfonyl chloride