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L-(-)-Xylose

L-xylose Struktur
609-06-3
CAS-Nr.
609-06-3
Bezeichnung:
L-(-)-Xylose
Englisch Name:
L-xylose
Synonyma:
XYLOSE;L-(-)-XYLOSE;(2S,3R,4S)-2,3,4,5-Tetrahydroxypentanal;L-XYL;L-XYLOSE;XYLOSE, L;L-Xylose,99%;laevo-xylose;L-Xylose (9CI);L(-)XYLOSE 99%
CBNumber:
CB0357344
Summenformel:
C5H10O5
Molgewicht:
150.13
MOL-Datei:
609-06-3.mol

L-(-)-Xylose Eigenschaften

Schmelzpunkt:
150-152 °C(lit.)
Siedepunkt:
191.65°C (rough estimate)
Dichte
1.525
Brechungsindex
-20 ° (C=10, H2O)
storage temp. 
Keep in dark place,Sealed in dry,Room Temperature
L?slichkeit
H2O: 0.1 g/mL, clear, colorless
pka
12.46±0.20(Predicted)
Aggregatzustand
Crystalline Powder
Farbe
White to off-white
Optische Aktivit?t
[α]24/D 18.7°, c = 4 in H2O
Wasserl?slichkeit
within almost transparency
Sensitive 
Hygroscopic
BRN 
1723080
InChIKey
SRBFZHDQGSBBOR-VVZXFQNISA-N
LogP
-2.390 (est)
CAS Datenbank
609-06-3(CAS DataBase Reference)
EPA chemische Informationen
L-Xylose (609-06-3)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher Xi
R-S?tze: 36/37/38
S-S?tze: 24/25-36-26
WGK Germany  3
3-10
TSCA  Yes
HS Code  29400000
Bildanzeige (GHS) GHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P302+P352, P321,P332+P313, P362
H319 Verursacht schwere Augenreizung. Schwere Augenreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P305+P351+P338,P337+P313P
H335 Kann die Atemwege reizen. Spezifische Zielorgan-Toxizit?t (einmalige Exposition) Kategorie 3 (Atemwegsreizung) Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" />
Sicherheit
P261 Einatmen von Staub vermeiden.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach M?glichkeit entfernen. Weiter spülen.

L-(-)-Xylose Chemische Eigenschaften,Einsatz,Produktion Methoden

R-S?tze Betriebsanweisung:

R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

S-S?tze Betriebsanweisung:

S24/25:Berührung mit den Augen und der Haut vermeiden.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.

Chemische Eigenschaften

L-Xylose is a white fine crystalline powder. It is an aldopentose that has a molecular formula C5H10O5 and a molar mass of 150.13 g/mol. The structure of L-xylose is presented in Figure 1. The optical rotations of D- and L-xylose are α20D = -18.6° and α20D = +18.6°, respectively (Fischer and Ruff, 1900). L-Xylose can exist in open chain form, as a pyranose or as a furanose. The relative concentrations of different stereoisomers have not been specified for L-xylose. However, for D-xylose the distribution of different forms in water are: 36.5% α-pyranose, 6% β-pyranose and less than 1 % in open chain and furanose form (Pastinen, 2000). Most likely L-xylose acts similarly to its enantiomer, and thus pyranose rings are predominant.
structure of L-xylose
Figure 1. Structure of L-xylose A) as a Fischer projection, B) as a ball and stick model in acyclic form and C) as a ball and stick model in pyranose ring form.

Verwenden

L-Xylose is used in the synthesis of L-Xylose derivatives as selective sodium-dependent glucose cotransporter 2 (SGLT2) inhibitors for the treatment of type 2 diabetes.

Definition

ChEBI: Aldehydo-L-xylose is a xylose of ring-opened form having L-configuration.

Application

l-Xylose is a suitable starting material for the production of L-ribonucleosides. L- Xylose can be converted into an L-ribose derivative via oxidation and reduction steps. This product is then glycosylated to give L-ribonucleosides: L-uridine, L-cytidine, L- adenosine and L-guanosine (Moyroud and Strazewski, 1999; Chelain et al., 1995).
L-Xylose can also be used as a starting material for the production of polyhydroxypyrrolidines and related analogues. These compounds have many biological activities. They are shown to have anti-HIV effects, inhibit tumor growth, and also act as ?- and ?-glucosidase inhibitors, which is of relevance for the development of diabetes drugs (Behr and Guillerm, 2007).

synthetische

L-Xylose can be produced from L-xylulose by isomerization. This can be achieved either enzymatically or chemically under alkaline conditions. The equilibrium of the reaction between D-xylose and D-xylulose in an aqueous solution has been determined at pH 6.8-7.4 and at 25 °C to be 85:15 in favor of D-xylose (Tewari et al., 1985).

L-(-)-Xylose Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


L-(-)-Xylose Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 308)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Beijing Ribio Biotech Co.,Ltd
010-62664360 +8613328773880
wucy@ribio.com.cn China 117 58
Hebei Mojin Biotechnology Co., Ltd
+86 13288715578 +8613288715578
sales@hbmojin.com China 12834 58
Capot Chemical Co.,Ltd.
+86-(0)57185586718 +86-13336195806
sales@capot.com China 29791 60
Shanghai Daken Advanced Materials Co.,Ltd
+86-371-66670886
info@dakenam.com China 18751 58
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 21634 55
Hangzhou FandaChem Co.,Ltd.
+8615858145714
FandaChem@Gmail.com China 9080 55
career henan chemical co
+86-0371-86658258 +8613203830695
sales@coreychem.com China 29880 58
Jinan Carbotang Biotech Co.,Ltd.
+8615866703830
figo.gao@foxmail.com China 8497 58
Accela ChemBio Inc.
+1-858-6993322
info@accelachem.com United States 17836 58
Xiamen AmoyChem Co., Ltd
+86-86-5926051114 +8618959220845
sales@amoychem.com China 6383 58

609-06-3(L-(-)-Xylose)Verwandte Suche:


  • aldehydo-L-xylose
  • XYLOSE, L
  • L-(-)-Xylose, 99+%, mixture of anomers
  • L(-)XYLOSE 99%
  • L-Xylose (9CI)
  • L-Xylose,99%
  • l-(-)-xylose, mixture of anomers
  • XYLOSE, L-(RG)
  • L-XYLOSE
  • XYLO-PFAN (xylose)
  • l-[1,2-13C2]xylose
  • l-[UL-13C5]xylose
  • L-(-)-Xylose, Mixture of anoMers >=99%
  • L-(-)-Xylose≥ 98% (TLC)
  • L-(-)-Xylose,L-XYLOSE
  • L-XYLOSE USP/EP/BP
  • laevo-xylose
  • TIANFU-CHEM L-XYLOSE
  • L-(-) Xylose extrapure, 99%
  • L-XYL
  • L-(-)-XYLOSE
  • (2S,3R,4S)-2,3,4,5-Tetrahydroxypentanal
  • XYLOSE
  • L-Xylose (9CI, ACI)
  • 609-06-3
  • Monosaccharides
  • Microbiology
  • ALDEHYDE
  • Sugars
  • Basic Sugars (Mono & Oligosaccharides)
  • Sugars for Media
  • Specialty Synthesis
  • BioChemical
  • Base Ingredients
  • Carbohydrate Sources (Sugars/Extracts)
  • Carbohydrate Synthesis
  • CARBOHYDRATE
  • Basic Sugars (Mono & Oligosaccharides)
  • Biochemistry
  • Sugars
  • Xylose
  • Carbohydrate Sources (Sugars/Extracts)
  • MonosaccharidesBase Ingredients
  • Sugars for Media
  • Carbohydrate Synthesis
  • Specialty Synthesis
  • Monosaccharides
  • bc0001
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