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
亚洲AV永久无码精品主页| 欧美偷窥清纯综合图区| 国产猛烈高潮尖叫视频免费| 亚洲美女又黄又爽在线观看| 成人做爰www免费看视频韩国| 麻花豆剧国产MV免费版特色| 亚洲欧美在线x视频| 日本老熟妇毛茸茸| 国产成人亚洲精品无码av大片| 国产精品乱码在线观看| 亚洲av无码一区东京热蜜芽| 久久精品国产一区二区三区| 西西人体自慰扒开下部93| 精品亚洲卡一卡2卡三卡乱码| 无遮挡免费高清羞羞视频| 强奷乱码中文字幕乱老妇| 精品午夜久久福利大片| 精品一卡2卡三卡4卡乱码精品视频| 久久精品国产99久久久古代| 成 人 免 费 黄 色 网 站 无 毒| 国农村精品国产自线拍| 精品国产一区二区三区不卡在线| 久久国产精品成人影院| 粗大的内捧猛烈进出视频| 欧美日韩国产成人高清视频| 国产精品怡红院在线观看| 精品人妻少妇嫩草AV无码专区| 亚洲AV成人片色在线观看高潮| 高清破外女出血AV毛片| 丰满少妇被猛烈进入试看| 欧美人与动人物牲交免费观看久久| 国产亚洲A∨片在线观看| 啦啦啦视频观看免费高清在线| 少妇无码太爽了在线播放| 亚洲国产另类久久久精品黑人| 无码人妻久久久一区二区三区| 国产三区在线成人AV| 男女边吃奶边做边爱视频| 成年女人片免费视频播放A| 日产精品二线三线区全新版本| 极品国产主播粉嫩在线观看|