国产毛片毛片毛片毛片毛片,日本一区二区 视频,91色婷婷双飞黑白少妇,亚洲无码一期二期三期

4-Dimethylaminopyridine


4-Dimethylaminopyridine

Product Categories:

Intermediates/Pharmaceutical intermediates

Product name:

4-Dimethylaminopyridine

Aliases:

N,N-Dimethyl-4-Pyridine Amine, Dimethylamino Pyridine, 4-Dimethylamino Pyridine, 4-Dimethylamino Pyridine/DMAP, P-Dimethylamino Pyridine, 4-Dimethylamino Pyridine 

Molecular Weight:

122.17

CAS NO:

1122-58-3

EC NO:

214-353-5

Molecular formula:

C7H10N2

Structural formula:

Specification:

99.0%

Package:

25kg/barrel

Uses:

A new type of high-efficiency catalyst widely used in chemical synthesis. It has high catalytic ability in various types of reactions such as acylation, alkylation, etherification, etc. in the synthesis of organic synthesis, drug synthesis, pesticides, dyes, fragrances, etc., and has an extremely obvious effect on improving the yield.

Product Introduction:

4-Dimethylaminopyridine is a new type of highly efficient catalyst widely used in chemical synthesis. It is a white crystalline powder with a molecular formula of C7H10N2. It is a super strong nucleophilic acylation catalyst. The resonance between the electron-donating dimethylamino group and the parent ring (Pyridine ring) in its structure can strongly activate the nitrogen atom on the ring for nucleophilic substitution, significantly catalyzing the acylation/esterification reaction of highly sterically hindered and low-reactive alcohols and amines/acids. Its activity is about 104~106 times that of Pyridine.


?
聯(lián)系我們
» 安徽省沃土化工有限公司
» 地址:安徽合肥市包河區(qū)屯溪路33號(hào)
» 營(yíng)銷一部(精細(xì)化學(xué)品、農(nóng)醫(yī)藥中間體):0551-64673459 顧經(jīng)理 13866687098
» 營(yíng)銷二部(吡啶及衍生物、氟化工產(chǎn)品):0551-64673469 田經(jīng)理 18356093580
» 營(yíng)銷三部(季銨鹽、堿及化工溶劑):0551-64673479 王經(jīng)理 15705603403
» 外貿(mào)部:0551-64656913 陳經(jīng)理 13262585338(微信同號(hào))
» 采購(gòu)部:0551-64656931 劉經(jīng)理 13339109190
  掃一掃二維碼
五月婷开心中文字幕| 国产日本视频一区二区| 夫妻黄色性生活网址| 天天操夜夜操夜夜奸一区二区、| 老鸭AV在线| 欧美乱码久久久久久1区2区| 少妇高潮流白浆| 激情欧美日| 日本不卡在线观看视频| 久久久久久蜜99精品| 久久久久AV色欲AV| 国产H剧情在线| 午夜日本福利网站在线| 五月天开心亚洲办公室丝袜电影院| ↗国产偷拍区| 国产香蕉97碰碰视频| 一二三区特级黄色电影| 搜索999国产1级毛片| 欧美日韩国产元码| 草草影院发布页| 国产麻豆中文字幕| 久精品二区|国产视频一区|| 久久高潮免费久久| 欧美3级a片| 变态成人网站永久| AV麻豆熟| 视频小少妇一区| 国产麻豆网站一区二区| ′亚洲黄色录亚洲黄色录像| 特级淫秽毛片网站| 亚洲 欧美 在线 综合| 欧美图区 二区| 天天插天天干成人av| 色欲在线www| 国产欧美综合一区二区网址| 深爱午夜丁香| 国语一级黄色大片| 日本一区视频在线观看免费不卡| 熟女a人妻一区二区三四区| 日韩欧美一区二区三区不学| 国产亚洲无码素人久久|