亚洲熟女偷拍精品一区_国产91小仙女福利在线精品剧情_国产馆无码馆中文馆日粉_国产午夜精品一二三区免费_日产成a人亚洲精v品无码

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

CollectionHomepage中文版

More>>
1-Methyl-2-pyrrolidinone
Product name: 1-Methyl-2-pyrrolidinone
CAS NO: 872-50-4;2687-44-7
Molecular weight: 99.13 
EC NO: 212-828-1
Molecular formula: C5H9NO
InChI: InChI=1/C5H9NO/c1-6-4-2-3-5(6)7/h2-4H2,1H3
Structural formula:
  Order                   Back