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6-O-BETA-D-GLUCOPYRANOSYL-D-GLUCOPYRANOSE

6-O-BETA-D-GLUCOPYRANOSYL-D-GLUCOPYRANOSE Struktur
5996-00-9
CAS-Nr.
5996-00-9
Englisch Name:
6-O-BETA-D-GLUCOPYRANOSYL-D-GLUCOPYRANOSE
Synonyma:
GENTIOBIOSE;B-GENTIOBIOSE;β-Gentiobiose;GENTIOBIOSE, B-;BETA-GENTIOBIOSE;BETA-D-GENTIOBIOSE;GENTIOBIOSE, B-(RG);6-O-b-D-Glucopyranosyl-b-D-glucopyranose;6-O-BETA-D-GLUCOPYRANOSYL-D-GLUCOPYRANOSE;β-D-Glucopyranose, 6-O-β-D-glucopyranosyl-
CBNumber:
CB7135840
Summenformel:
C12H22O11
Molgewicht:
342.3
MOL-Datei:
5996-00-9.mol

6-O-BETA-D-GLUCOPYRANOSYL-D-GLUCOPYRANOSE Eigenschaften

Schmelzpunkt:
190 °C
Siedepunkt:
662.8±55.0 °C(Predicted)
Dichte
1.57 g/cm3
pka
12.10±0.70(Predicted)
LogP
-3.200 (est)

Sicherheit

S-S?tze: 24/25

6-O-BETA-D-GLUCOPYRANOSYL-D-GLUCOPYRANOSE Chemische Eigenschaften,Einsatz,Produktion Methoden

S-S?tze Betriebsanweisung:

S24/25:Berührung mit den Augen und der Haut vermeiden.

l?uterung methode

-Gentiobiose is best purified via the octaacetate which is recrystallised from MeOH, EtOH or better from methyl cellosolve by heating at 80o. The octaacetate (15g) is hydrolysed by suspending it in dry 0.05N NaOMe in MeOH (180mL) for 1hour with occasional shaking at room temperature. Dilute this with H2O to dissolve suspended matter, pass through Amberlite IR-120 and Duolite A-4 columns and the eluate is evaporated under reduced pressure to a syrup. Residual H2O is removed by repeated distillation with absolute EtOH under reduced pressure. The syrup is dissolved in methyl cellosolve (~40mL), filtered, nucleated and placed in an oven at 80o. The crystals are filtered off, washed with absolute EtOH (yield 6.7g, 89%), dried and have m 187-189o. Further recrystallisation from methyl cellosolve gives m 190o, and mutarotates from [] D 28 -1.5o (initial) to +10.6o (final, c 4, H2O). The -octaacetate has m 193o (crystallised from 95% EtOH) and has [] D 20 -5o (c 1.8, CHCl3). [Goldstein & Whelan Methods in Carbohydrate Chemistry I 313 1962, Academic Press, Beilstein 17/7 V 203.]

6-O-BETA-D-GLUCOPYRANOSYL-D-GLUCOPYRANOSE Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


6-O-BETA-D-GLUCOPYRANOSYL-D-GLUCOPYRANOSE Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 19)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Combiphos (Shanghai) Biological Technology Co., Ltd. 021-65232103 17602124823
combiphos@vip.qq.com China 29909 58
Shanghai Jizhi Biochemical Technology Co. Ltd. 4009004166/18616739031 18616739031
3007523370@qq.com China 52693 58
Beijing OKA biological technology co., LTD 010-010-010-62971590 18548936886
jack@oka-vip.com China 6897 58
Shenzhen Polymeri Biochemical Technology Co., Ltd. +86-400-002-6226 +86-13028896684;
sales@rrkchem.com China 57423 58
Jiangsu aikang biomedical research and development co., LTD 025-66110311 13155353615
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cjbscvictory 13348960310 13348960310
3003867561@qq.com China 10011 58
Foshan Treasure Biotechnology Co., Ltd 0757-85921206 18520245316
2329783215@qq.com China 12661 58
Nanjing Shizhou Biology Technology Co.,Ltd 025-85560043 15850508050
rose.shi@synzest.com China 6210 58
SHANGHAI ZZBIO CO., LTD. 15102117276 19921389125
tech@zzbioco.com China 12065 58
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