久久久网_国产精品内射视频免费_美脚の诱脚舐め脚责91_久久国产欧美日韩精品_国产欧美日韩一区二区搜索_一区两区三区四区乱码国产精品

Welcome to Zhejiang Synose Tech Co., Ltd.!

Carbohydrate Derivative

Diacetone-beta-D-fructose

Chemical name: 2,3:4,5-Di-O-isopropylidene-β-D-fructopyranose; 2,3:4,5-Bis-O-(1-methylethylidene)-β-D-fructopyranose

Molecular Formula: C12H20O6

Molecular weight: 260.28

CAS No.: 20880-92-6

EC No.: 606-663-8

Quality Standard:

Item

Specification

Appearance

Assay (HPLC), %

Melting point, ℃

Specific rotation , (C=1,CHCl3

Loss on drying, %

Rresidue on ignition, %

White crystalline powder

≥98.0

93~95

-24~-27

≤1.0

≤0.1

Characteristics: It is a white crystalline powder. Soluble in water, chloroform and acetone etc.

Uses: It is mainly used for synthesis of anticonvulsants Topiramate. In addition, it is also used as starting materials for synthesize of natural compounds with glycosidase inhibitory activity and anti-cancer activity such as Castanospermine, Talaromycin A and B. It is used for synthesis of diacetone β-D-fructose derivatives, such as 1-deoxy-1-halogenated-D- 2,3:4,5-diacetone fructose, 2,3:4,5-di-O-isopropylidene-β-D-fructo-hexodialdo-l,5-pyranose,1-benzoyl-2,3:4,5-D-diacetone fructose, 2,3-O-isopropylidene-β-D-fructose,1-methyl-2,3:4,5 di-O-isopropylidene-β-D-fructose, etc. and fructose derivatives such as 2-deoxy-3,4:5,6–di-O- diacetone-D-arabino-3-heptulos-3,7-pyranose,1,4,5- and 3,4,6- tri-O-methyl fructose, 1-deoxy-1-halogenated fructose,D-psicose, etc. And used for synthesis Amadori compound, deoxy-halogenated-sucrose, hexosephosphates, Di-β-D-fructopyranose,O- and S- linked glucosidofructose, poly(-O-methacryloyl-β-D-fructose),and biodegradable polymer as bolaform and Gemini surfactant.

Storage: Maintain in cool, dry containment.

Package: 25kg/drum or as customer require.

Expiration Date: 2 years

No.1958 Liyu Road Jinhua, Zhejiang, China

0086-579-82270620

expo@synose.com

Home|About us|News|Products|Custom|Contact us|中文版|English|日本語|Fran?ais|Pусский|Espa?a
Copyright(C)2017, Zhejiang Synose Tech Co., Ltd. All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle Copyright Notice 浙ICP備06002737號-1
主站蜘蛛池模板: 九色pron| 37人体做爰久久久久久 | 亚洲一区二区三区在线视频观看 | 秋霞鲁丝片av无码 | 狠狠干视频网站 | 久久精品亚洲酒店 | 性人久久网av | 毛片插插插 | 男女后进式猛烈XX00免费视频 | 亚洲高清色 | 日本三级日本三级韩国三级视 | 99视频免费播放 | 成年美女黄网站色大免费视频 | 天天摸天天操天天舔 | 国产欧美在线视频 | 中文字幕日韩无 | 国产宾馆自拍 | 在线不卡123 | 国产91久久久久蜜臀青青天草二 | 爱情岛论坛网址永久首页 | 免费女人18毛片A级毛片视频 | 年轻的朋友在线 | 午夜性刺激免费看视频 | 农村人chinese熟女 | 99riav国产一区二区三区 | 91久久国产综合精品女同 | 刺激一区仑乱 | 久久久亚洲精品视频 | 欧美日韩国产这里只有精品 | 成人福利热舞hd | 天天看AV片在线观看 | 亚洲欧美日本在线观看 | 少妇无套内谢69xx | swag破解版 | 日日日视频 | 国产成人久久AV一区二区 | 大陆国语对白国产av片 | 久久精品人妻无码一区二区三区 | 国产亚洲精久久久久久小说 | 天美传媒精品1区2区3区 | 日本欧美一区二区三区视频麻豆 |