C00984 Chemical Properties

Melting point:

169-170oC

Boiling point:

410.8±45.0 °C(Predicted)

Density 

1.732±0.06 g/cm3(Predicted)

storage temp. 

Refrigerator, Under Inert Atmosphere

solubility 

Water (Slightly)

pka

12.12±0.70(Predicted)

color 

White to Off-White

C00984 Usage And Synthesis

Uses

α-D-Galactose is the alpha anomer of D-Galactose (G155250), the C-4 epimer of Glucose (G595000). D-Galactose is found in milk and sugar beets as well as being synthesized by the body.

Definition

ChEBI: Alpha-D-galactose is d-Galactopyranose having alpha-configuration at the anomeric centre. It has a role as a mouse metabolite. It is an enantiomer of an alpha-L-galactose.

Purification Methods

-D-Galactose is crystallised twice from aqueous 80% EtOH at -10o, then dried in a vacuum oven at 90o over P2O5 for 10hours. [Link Biochemical Preparations 3 75 1953, Hansen et al. Biochemical Preparations 4 2 1955.] Also purify it by recrystallising the dried solid (150g) in hot H2O (150mL), then adding hot MeOH (250mL) and hot EtOH (500mL), stirring to mix, filtering through a bed of charcoal, and the clear filtrate is stirred to initiate crystallisation. After standing overnight at 10o, the crystals of the -anomer are filtered off by suction, washed with MeOH, then EtOH, and dried (yield 130g), and more can be obtained by evaporation of the filtrate and washing as before. [Wolfrom & Thompson Methods in Carbohydrate Chemistry I 120 1962, Academic Press, Beilstein 1 IV 4336.]

C00984(3646-73-9)Related Product Information

• ALPHA-D-[1-13C]GALACTOPYRANOSYL 1-PHOSPHATE DIPOTASSIUM SALT