Sophorabioside
Title: Sophorabioside
CAS Registry Number: 2945-88-2
CAS Name: 3-[4-[[2-O-(6-Deoxy-a-L-mannopyranosyl)-b-D-glucopyranosyl]oxy]phenyl]-5,7-dihydroxy-4H-1-benzopyran-4-one
Additional Names: genistein-4¢-glucosidorhamnoside
Molecular Formula: C27H30O14
Molecular Weight: 578.52
Percent Composition: C 56.05%, H 5.23%, O 38.72%
Literature References: From fruits of Sophora japonica L., Leguminosae. Isoln and structure: Zemplén, Bognár, Ber. 75B, 482 (1942). The biose is not identical with rutinose.
Properties: The anhydr substance mp 248° (slight decompn). [a]D19 -73° (0.27 g in 10 ml pyridine). Freely sol in pyridine; sol in hot alcohol, hot acetone; slightly sol in boiling water. The alcoholic soln gives a purple color with ferric chloride.
Melting point: mp 248° (slight decompn)
Optical Rotation: [a]D19 -73° (0.27 g in 10 ml pyridine)
 
Derivative Type: Trihydrate
Properties: Needles from dil alcohol, mp 156-160°. The water of crystn can be removed by drying at 100° over P2O5 in vacuo for 12 hours.
Melting point: mp 156-160°

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