Vitamin D_2 tetra acetyl glucoside, was synthesized from D_2 and tetra acetyl glucosyl bromide by Koenigs-Knorr reaction. The chemical structure of the compound was ascertained from its elementary analysis. UV-, IR-, mass- or NMR-spectral analysis and reacetylation after deacetylation. Neither isomerization nor rearrangement in the process of synthetic treatment was observed. Further data on the solubility in ethanol and specific rotation were determined. Although water-solubilization of D_2 was the aim of this synthetic experiment, the D_2 glucoside was insoluble in water. (Received March 24,1972)