国产女人18毛片水真多,国模冰莲自慰肥美胞极品人体图,国产av无码专区亚洲精品,大地资源在线观看免费下载

 
Location:Home >>Product >>Intermediate

Methyltriphenylphosphonium bromide

Update time:2021/11/03 11:07:11  ???View:  
Triphenylmethylphosphonium bromide
Aliases: triphenylmethylphosphonium bromide, bromomethane triphenylphosphonium salt, methyl triphenylphosphonium bromide, triphenylmethylphosphonium bromide
CAS: 1779-49-3
Molecular formula: C19H18PBr
Main content ≥99%
Packing: 25KG cardboard drum
Properties: white powdery solid
Uses: used in organic synthesis; use Wittig reagents, used in the preparation of alkenes, to increase the carbon number of unsaturated carbon chains. The ylide precursor of the Wittig reaction is widely used in the synthesis of unsaturated bonds in liquid crystal materials; it is a good cationic phase transition catalyst; it is widely used in the methylene reaction by using the Wittig reaction and widely used in Chemicalbook; Wittig Alkylene salt, after ring-closing metathesis, is used to synthesize an enyne that can provide a benzoazepine heterocyclic system; Wittig olefinic salt, recently used to synthesize enynes, through ring-closing metathesis to generate a benzazepine ring system . It is widely used in methyleneization through Wittig reaction.
------分隔線----------------------------

Service Hotline:

You only need a phone call, we will serve you attentively

Consult now
Copyright © Shandong Zhengji Chemical Co., Ltd.  All Rights Reserved   Case Number :魯ICP備20007847號-4 chemBlink Premium Supplier
久久久久人妻一区精品性色AV| 国产成人精品福利一区二区三区| 国产99久久99热这里只有精品15| 亚洲精品无码专区在线| 亚洲欧美中文日韩V在线观看不卡| 国产精品乱码一区二区三区| 免费A级作爱片免费观看美国| 狂野欧美激情视频在线| 亚洲暴爽AV人人爽日日碰| 综合无码一区二区三区| 午夜性色一区二区三区不卡视频| 国产午夜精品无码理论片| 欧美成人一区二区三区| 国产乱子伦视频大全亚琴影院| 东京热人妻丝袜AV无码| 男女猛烈xx00免费视频试看| 亚洲成成品网站源码中国有限公司| 国产黑色丝袜在线视频| 国产成人av三级在线观看| 国产在线无码一区二区三区| 男女啪啪18禁无遮挡激烈| 久久超碰97人人做人人爱| 中文字幕卡二和卡三的视频| 中文字日产乱码六区中国有限公司| 四虎影视国产精品永久在线| 国产免费人成视频在线播放播| 新狼窝色AV性久久久久久| 麻花传媒MV一二三区别| 国内精品国产三级国产AV| 国产精品女人呻吟在线观看| 亚洲男同帅GAY片在线观看| 99久久国产精品免费一区二区| 国产人与禽zoz0性伦| 放荡的丰满少妇中文字幕| 女厕厕露P撒尿八个少妇| 亚欧乱色熟女一区二区三区| 久久国产精品成人免费| 欧美成在线精品视频| 精品国产成人国产在线视| 国产成人精选视频在线观看不卡| 免费a级黄毛片|