D-Altrose

Bezeichnung:D-Altrose

CAS-Nr1990-29-0

Englisch Name:D-ALTROSE

CBNumberCB5249523

SummenformelC6H12O6

Molgewicht180.16

MOL-Datei1990-29-0.mol

Synonyma

D-Altrose

D-Altrose physikalisch-chemischer Eigenschaften

Schmelzpunkt	106-108 °C
alpha	D20 +32.6° (c = 7.6)
Siedepunkt	232.96°C (rough estimate)
Dichte	1.581
Brechungsindex	1.5860 (estimate)
storage temp.	2-8°C
Löslichkeit	DMSO (Slightly), Methanol (Slightly, Heated), Water (Slightly)
Aggregatzustand	Powder
pka	12.45±0.20(Predicted)
Farbe	White to off-white
Optische Aktivität	[α]/D 33.0±2.0°, c = 0.2 in H2O
Merck	13,319
BRN	1724621
LogP	-3.290 (est)
CAS Datenbank	1990-29-0(CAS DataBase Reference)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	24/25-36-26
WGK Germany	3
HS Code	29400090

D-ALTROSE Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze 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
white to off-white powder
Verwenden
D-Altrose is the epimer of D-glucose at C3 and have recently been discovered to possess antioxidant properties by the suppression of reactive oxygen species production in mitochondria due to competiti on with D-glucose at the cellular level.
Definition
An aldohexose that is isomeric with glucose, tallose, allose, and others.
läuterung methode
Crystallise D-altrose from aqueous EtOH. If it is obtained by the hydrolysis of the acetate, then it may contain sodium and acetate ions. Ions are best removed by dissolving in H2O, passing through suitable columns of ion-exchange resins, e.g. Amberlite IR-120 and Duolite A, and concentrating in a vacuum to a syrup. This is dissolved in MeOH, filtered and evaporated in a vacuum desiccator over granular CaCl2. The thick syrup is inoculated with seed crystals, stirred, and before it sets to a magma of crystals, transfer the crystals with MeOH to a Büchner funnel. Recrystallise them in the same way. -D-Altrofuranoside has initial [] D ~-69o (c 4, H2O) which mutarotates to +33o. [Richtmeyer Methods in Carbohydrate Chemistry I 107 Academic Press 1962, Beilstein 1 IV 4301, see Angyal Adv Carbohydrate Chem Biochem 42 15 1984 for ratio of anomers in solution.]

D-ALTROSE Upstream-Materialien And Downstream Produkte

D-Altrose Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

1990-29-0, D-ALTROSE Verwandte Suche:

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