九九国产精品成人免费视频_人妖AV在线精品一区二区三区_国产免费午夜a无码v视频_91精品成人一区二区三区不卡

 Piracetam(Naofukang)
 Tazobactam
 Tazobactam Intermediate
 Ethyl formate
 α-Pyrrolidone
 Sodium Methoxide
 Trimethyliodosilane
 Hexamethyl disilylamine
 Benzene, Toluene Xylene,
 Solventene
 Aniracetam
 Dibenzoyl-L-tartaric acid monohydrate
 
 
Toluene
 
Quality standard 獵hinese national standard籊B/T2284-93
Appearance  Transparent liquid
Density  0.860-0.870
Distillation range  ≤2.0
Color comparative acid wash  Not deeper than 0.30
Bromine value  ≤0.30
PH  7.0
Water  No visible indiscernible water under room temperature

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