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:2021/11/02 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(hào)-4 chemBlink Premium Supplier
国产免费无遮挡吸奶头视频| 男人J放进女人J无遮挡免费看| 免费的污污的网站在线观看| 少妇太爽了在线观看免费视频| 一本色道久久hezyo无码| 最新亚洲AV日韩AV二区| 亚洲 日本 欧洲 欧美 视频| 无码久久精品国产亚洲AV影片| 无人区免费一二三四乱码| 中文人妻熟妇乱又伦精品| 福利姬国产精品一区在线| 国产伦精品免编号公布| 人人添人人澡人人澡人人人人| 国产精品久久久久久无码五月| 无码av一区二区三区无码| 日韩人妻无码精品-专区| 欧美喷潮最猛视频| 国产性夜夜春夜夜爽| 人妻出差被寝取中文字幕| 99久久国产精品免费热6| 最新亚洲人成无码网WWW电影| 中文资源在线天堂库8| 黄网站色视频免费观看| 国产欧美精品区一区二区三区| 每日更新在线观看av| 老熟女高潮一区二区三区| 永久免费观看黄网视频| 欧美日韩一区二区综合| 久久精品人人做人人综合试看| 麻豆国产AV穿旗袍强迫女佣人| 丁香五月亚洲春色| 亚洲自偷自偷偷色无码中文| 九九爱WWW人成免费网| 又粗又大又黄又硬又爽免费看| 在线观看无码不卡AV中文| 亚洲色欲色欱WWW在线| 无码手机线免费观看| 无码精品人妻一区二区三区涩爱| 日产乱码卡一卡2卡三卡四颐和园| 欧洲精品一卡2卡三卡4卡影视| 久久综合av免费观看|