色综合久久综合网欧美综合网-色婷婷综合久久久-国内久久久久久久久久-久久久久久精品久久久 ,AV欧日韩在线观看_国产日韩综合一区_人人妻人人爽人人狠狠一_亚洲人成久久播播

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

CollectionHomepage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