67471-04-9
6,7-dichloro-2,3-dihydro-1,4-benzodioxine
→
166816-12-2
1-(6,7-dichloro-5-nitro-2,3-dihydro-1,4-benzodioxin-8-yl)ethanone
493-09-4
1,4-苯并二恶烷