俄罗斯兽交黑人又大又粗水汪汪-肥白大屁股bbwbbwhd-粉嫩大学生无套内射无码卡视频-粉嫩高中生无码视频在线观看-粉嫩极品国产在线观看-粉嫩萝控精品福利网站

 
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
主站蜘蛛池模板: 国产亚洲欧美在线视频 | 99热这里只有精品国产99热门精品 | 久久久久噜噜噜亚洲熟女综合 | 日韩精品久久久久久 | 欧美白人黑人xxxx猛交 | 免费观看一级成人毛片 | 天天爱天天干天天操 | 国产成人精品无码免费看夜聊软件 | 精品视频一区二区三区 | 欧美18videosex性欧美乱任 | 成人欧美一区二区三区 | 99久久人妻精品免费一区 | 黃片小视频免费 | 青草青草久热精品视频在线网站 | 欧美视频精品在线观看 | 亚洲精品中文字幕大岛优香 | 日日狠狠久久8888偷偷色 | 国产精品久久久免费视频 | 黄色视频免费在线观看 | 国产乱码精品一区二区三区中文 | 久久人人爽人人爽人人片av高清 | 无码粉嫩虎白一线天在线观看 | 2022国内精品免费福利视频 | 狠狠操中文字幕 | 欧美白人战黑吊 | 成年人在线网站 | 色老头一区二区三区在线观看 | 亚洲欧美日韩综合一区 | 精品日本三级在线观看视频 | 精品久久久99大香线蕉 | 无码熟妇人妻av影片在线 | 久久这里只有精品久久 | 国产成人在线视频 | 日韩免费中文字幕 | 人妻聚色窝窝人体www一区 | 婷婷六月久久综合丁香可观看 | 欧美黑人添添高潮a片www | 精品日韩欧美一区二区在线播放 | 九九久久免费视频 | 精品无码一区二区三区 | 风韵多水的老熟妇 |