197901-89-6

Basic information

• Product Name: α-D-glucopyranosyl-(1->6)-D-mannopyranose
• Synonyms: α-D-glucopyranosyl-(1->6)-D-mannopyranose
• CAS NO: 197901-89-6
• Molecular Weight: 342.3
• Mol File: 197901-89-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: α-D-glucopyranosyl-(1->6)-D-mannopyranose(CAS DataBase Reference)
• NIST Chemistry Reference: α-D-glucopyranosyl-(1->6)-D-mannopyranose(197901-89-6)
• EPA Substance Registry System: α-D-glucopyranosyl-(1->6)-D-mannopyranose(197901-89-6)

Safety Data

• Hazardous Substances Data: 197901-89-6(Hazardous Substances Data)

Upstream product

• 24822-33-1 D-isomaltose 

Relevant articles and documents

Production of keto-disaccharides from aldo-disaccharides in subcritical aqueous ethanol

Isomerization of disaccharides (maltose, isomaltose, cellobiose, lactose, melibiose, palatinose, sucrose, and trehalose) was investigated in subcritical aqueous ethanol. A marked increase in the isomerization of aldo-disaccharides to keto-disaccharides was noted and their hydrolytic reactions were suppressed with increasing ethanol concentration. Under any study condition, the maximum yield of keto-disaccharides produced from aldo-disaccharides linked by β-glycosidic bond was higher than that produced from aldo-disaccharides linked by α-glycosidic bond. Palatinose, a keto-disaccharide, mainly underwent decomposition rather than isomerization in subcritical water and subcritical aqueous ethanol. No isomerization was noted for the non-reducing disaccharides trehalose and sucrose. The rate constant of maltose to maltulose isomerization almost doubled by changing solvent from sub-critical water to 80 wt% aqueous ethanol at 220°C. Increased maltose monohydrate concentration in feed decreased the conversion of maltose and the maximum yield of maltulose, but increased the productivity of maltulose. The maximum productivity of maltulose was ca. 41 g/(h kg-solution).