久久99精品国产99久久6尤,国产成人精品综合网站,18国产精品白浆在线观看免费,久久成人无码视频,日本欧美不卡一区二区三区在线,欧美又黄又粗又爽免费看,欧美视频一区二区,免费人妻精品一区二区三区四区,狠狠色狠狠色综合网,97色伦图片7778久久

  • <strike id="i6ace"><input id="i6ace"></input></strike><fieldset id="i6ace"></fieldset>
  • <ul id="i6ace"><dfn id="i6ace"></dfn></ul>
  • <del id="i6ace"><dfn id="i6ace"></dfn></del>

     
    Location:Home >>Product >>Intermediate

    Methyltriphenylphosphonium bromide

    Update time:2021/11/02 09:05:11  ???View:  
    Triphenylmethylphosphonium bromide
    Alias: triphenylmethylphosphonium bromide, bromomethane triphenylphosphonium salt, methyltriphenylphosphonium 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 methylene 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
    亚洲精品无码久久久久| 久久毛片少妇高潮| 日韩精品成人AV在线播放| 亚洲av无码国产精品色午夜洪| 成人免费无遮挡在线播放| 97av| 亚洲乱码精品久久久久.. | 东京热久久一区二区AV无码不卡| 久久强奷乱码老熟女网站| 日韩精品成人一区二区三区| 亚洲中文字幕日产乱码高清app| 国产自产v一区二区三区c| 啪啪无码人妻丰满熟妇| 精品国产亚洲av麻豆| 国产中文字幕乱人伦在线观看| 欧美日韩国产免费一区二区三区| 在线观看av片| 狼友av永久网站免费观看| 日本牲交大片无遮挡| 67194熟妇人妻欧美日韩| 亚洲v欧美v国产v在线观看| 国产精品交换| 人妻无码一区二区不卡无码av| 99精品偷自拍| 色综合久久久无码中文字幕| 色久悠悠婷婷综合在线亚洲| 成人午夜高潮a∨猛片| 无码人妻视频一区二区三区| 亚洲av永久无码精品古装片| 亚洲国产精品无码久久久秋霞1| 丰满人妻熟妇乱又伦精品| 人妻少妇无码精品视频区| 久激情内射婷内射蜜桃人妖| 波多野42部无码喷潮| 亚洲一区二区三区av无码| 天天躁日日躁狠狠躁人妻| 无码人妻一区二区三区免费看| av免费不卡国产观看| 亚洲区小说区图片区qvod| 国产福利91视频| 色噜噜狠狠一区二区三区果冻|