欧美一批二区三区视频|超碰在线久热草久久网址|最新欧美精品无码|日本黄色大全99调教视频|91影院女同免费日韩A|中文字幕第一页在线|国产高清自拍肏屄aV|日韩无码一及全黄电影|日韩激情麻豆亚洲激情啪一啪|成人视频一区视频二区免费网址

























N,N'-Carbonyldiimidazole



intro:
Product Name: N,N'-Carbonyldiimidazole
Alias : CDI

羰基咪唑

1,1'-Carbonyl diimidazole; CDI
Molecular Formula: C7H6N4O          
Molecular Weight: 162.15
CAS RN: 530-62-1    
EINECS RN: 208-488-91
1. Properties & Use
Appearance: white crystal, m.p.: 117～122℃. Can generate imidazole and carbon dioxide in water.
soluble in ethanol, toluene, ethyl acetate, slightly soluble in aldehyde, dutch liquid, tetrahydrofuran.
Use: As condensating agent for the synthesis of nucleoside triphosphate, peptide and other esters; as intermediate for the synthesis of acylimidazole etc.
2. Quality Spec.
Item
Details
Testing method
Appearance
white or similar to white powder
visual study
Assay     ≥  %
98
HPLC
m.p.:      ℃
115~122
DIGITAL MELTING-POINT APPARATUS
Toluene solubility test
qualified
soluble in toluene
3. Packing
In cardboard drum lined with plastic bag, 25kg, 20kg, 10kg, or upon clients' demand.

 





?