91视频亚洲-亚洲日本欧美在线-无码人妻专区免费视频-国产午夜影院-91老司机在线视频-99精品丰满人妻无码a片-91福利视频导航-www国产亚洲精品久久久日本-国语对白做受xxxxx在线中国-狠狠伊人-80s国产成年女人毛片-国产在线成人精品午夜-午夜视频在线-亚洲欧美中文字幕5发布-国产毛片一区二区精品

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

Collection ｜Homepage ｜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