国产成年无码AV片在线韩国_国产JK精品白丝喷浆在线_国产精品一级二级羞羞草_亚洲a∨成年红怡院电影

 Piracetam(Naofukang)
 Tazobactam
 Tazobactam Intermediate
 Ethyl formate
 α-Pyrrolidone
 Sodium Methoxide
 Trimethyliodosilane
 Hexamethyl disilylamine
 Benzene, Toluene Xylene,
 Solventene
 Aniracetam
 Dibenzoyl-L-tartaric acid monohydrate
 
 
Pure benzol
 
Quality standard  獵hinese national standard籊B/T2283-93
Appearance  Transparent liquid
Density  0.874-0.880
Distillation range  ≤1.0
Color comparative acid wash  Not deeper than 0.40
Bromine value  ≤0.30
Crystallizing point  4.9°C
PH  7.0
Water  No visible indiscernible water under room temperature

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