2706-65-2 78112-10-4 D-Glucose, O-2-(acetylamino)-2-deoxy-beta-D-glucopyranosyl-(1-4)-O-2-(acetylamino)-2-deoxy-beta-D-glucopyranosyl-(1-4)-O-2-(acetylamino)-2-deoxy-beta-D-glucopyranosyl-(1-4)-2-(acetylamino)-2-deoxy- N,N',N'',N'''-Tetraacetylchitintetraose Tetra-N-acetylchitotetraose