日韩欧美一区二区三区在线,久久久免费观看视频,亚洲精品aaa,91极品国产,国产精品久久久久久久久鸭,亚洲国产成a人v在线观看,国产69精品久久久久9999

2,7-Dibromo-9,9- dimethylfluorene

  • CasNo:28320-32-3
  • Molecular Formula: C15H12Br2
  • Purity:99
  • Molecular Weight:352.06
Inquiry

Product Details

Packing:25 kg/barrel