Ruberythric Acid
Title: Ruberythric Acid
CAS Registry Number: 152-84-1
CAS Name: 1-Hydroxy-2-[(6-O-b-D-xylopyranosyl-b-D-glucopyranosyl)oxy]-9,10-anthracenedione
Additional Names: 1-hydroxy-2-anthraquinonyl 6-O-b-D-xylopyranosyl-b-D-glucopyranoside; b-2-alizarin primeveroside; ruberythrinic acid; rubian; rubianic acid
Molecular Formula: C25H26O13
Molecular Weight: 534.47
Percent Composition: C 56.18%, H 4.90%, O 38.92%
Literature References: Isoln from root of Rubia tinctorium L., Rubiaceae: Hill, Richter, Proc. R. Soc. London Ser. B 121, 547 (1937). Structure: Richter, J. Chem. Soc. 1936, 1701. Synthesis: Zemplén, Bognár, Ber. 72B, 913 (1939). Metabolism: Maehner, Dulce, Z. Klin. Chem. Klin. Biochem. 6, 99 (1968).
Properties: Golden-yellow, silky, lustrous prisms or long needles. mp 259-261° (from water). Sol in hot water, alkalies; slightly sol in alc, ether. Practically insol in benzene.
Melting point: mp 259-261° (from water)

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