6-氯-2H-色烯-2-酮

6-chloro-2,2-dimethylchromene

6-Chloro-3,4-dihydro-2,2-dimethyl-trans-3-bromo-4-hydroxy-2H-benzo[b]pyran

3,4-dibromo-6-chloro-2,2-dimethylchromane