国产乱对白精彩在线播放_亚洲国产午夜网站在线_国产在线国语对白_99re6免费视频 这里只有精品

Welcome to visit Changzhou Chengbang Chemical Co., Ltd. official website!

Collection ｜Homepage ｜中文版

More>>
Anhydrous Piperazine
Product name: Piperazine
CAS NO: 110-85-0
Molecular weight: 86.1356 
EC NO: 203-808-3
Molecular formula: C4H10N2
InChI: InChI=1/C4H10N2/c1-2-6-4-3-5-1/h5-6H,1-4H2
Structural formula:
  Order                   Back