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
无码免费一区二区三区免费播放| 无码人妻久久一区二区三区蜜桃| 国产无套粉嫩白浆在线观看| 亚洲精品无码久久久久秋霞| 香蕉久久久久久久AV网站| 亚洲AV无码京香无码AV| 噜噜综合亚洲AV中文无码| 久久久无码精品亚洲日韩按摩| 亚洲国产精品热久久| 青青爽无码视频在线观看| 亚洲AV无码国产剧情| 精品免费一区二区在线| 中文字幕久久久久人妻| 丰满少妇偷人51视频在线观看| 日韩免费视频一一二区| 免费网禁国产YOU女网站下载| 最近高清日本免费| 熟女俱乐部五十路二区av| 国产一区二区不卡在线看| 亚洲精品自产拍在线观看| 一区二三区四区精华液| 欧美成人一区二区三区不卡| 无码人妻丰满熟妇区毛片18| 国产成人亚洲综合网色欲网久下载| 隔壁老王国产在线精品| 欧美一卡2卡三卡4卡乱码免费| 久久亚洲欧美国产精品| 国产V亚洲V天堂A无码| 无遮挡又爽又刺激的视频| 国产亚洲精品欧洲在线观看| 狠狠色噜噜狠狠狠狠7777米奇| 老子影院午夜精品无码| 色翁荡熄又大又硬又粗又视频| 又大又爽又硬的曰皮视频| 久久先锋男人AV资源网站| 少妇激情艳情综合小视频| 国产成人A在线视频免费| 成 人 色综合 综合网站| 国产麻豆剧果冻传媒一区| www插插插无码免费视频网站| 成人综合婷婷国产精品久久|