7434-12-0

Basic information

• Product Name: Xylopyranose, 2,3-di-O-methyl-, .beta.-D-
• Synonyms: Xylopyranose, 2,3-di-O-methyl-, .beta.-D-
• CAS NO: 7434-12-0
• Molecular Formula: C₇H₁₄O₅
• Molecular Weight: 178.18306
• Mol File: 7434-12-0.mol
• Article Data: 4

Chemical Properties

• Melting Point: 78 °C
• Boiling Point: 311.6±42.0 °C(Predicted)
• Appearance: /
• Density: 1.25±0.1 g/cm3(Predicted)
• PKA: 12.06±0.70(Predicted)
• CAS DataBase Reference: Xylopyranose, 2,3-di-O-methyl-, .beta.-D-(CAS DataBase Reference)
• NIST Chemistry Reference: Xylopyranose, 2,3-di-O-methyl-, .beta.-D-(7434-12-0)
• EPA Substance Registry System: Xylopyranose, 2,3-di-O-methyl-, .beta.-D-(7434-12-0)

Safety Data

• Hazardous Substances Data: 7434-12-0(Hazardous Substances Data)

Upstream product

• 81417-77-8 cleistanthin E 
• 81425-03-8 C₄₅H₅₈O₂₀ 
• 79936-22-4 benzyl 4-O-benzyl-2,3-di-O-methyl-β-L-arabinopyranoside 
• 79936-17-7 benzyl 4-O-benzyl-2-O-methyl-β-L-arabinopyranoside 
• 79936-12-2 benzyl endo-3,4-O-benzylidene-β-L-arabinopyranoside 
• 79936-13-3 benzyl exo-3,4-O-benzylidene-β-L-arabinopyranoside 
• 79936-14-4 benzyl endo-3,4-O-benzylidene-2-O-methyl-β-L-arabinopyranoside 
• 79936-15-5 benzyl exo-3,4-O-benzylidene-2-O-methyl-β-L-arabinopyranoside 
• 74-88-4 methyl iodide 

Relevant articles and documents

Antibacterial activity of a triterpenoid saponin from the stems of Caesalpinia pulcherrima Linn.

A new compound 1 was isolated from the methanolic extract of the stems of the Caesalpinia pulcherrima Linn. along with a reported compound (2) 3-O-β-D-glucopyranosyl-(1→4)-β-D-xylopyranosyl-(1→3)-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl hederagenin 28-O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester. The new compound 1 has m.p. 272–274°C, m.f. C46H74O17, [M]+ m/z 898. It was characterised as 3-O-β-D-glucopyranosyl-(1→4)-α-L-arabinopyranosyl hederagenin 28-O-β-D- xylopyranosyl ester by various colour reactions, chemical degradations and spectral analyses. Antibacterial activity of compound 1 was screened against various Gram-positive and Gram-negative bacteria and showed significant results.

CARBOHYDRATE METHYL ESTERS, X. HYDROGENOLYSIS OF BENZYLIDENE ACETALS. SYNTHESIS OF MONO- AND DI-O-METHYL ETHERS OF L-ARABINOSE

Preparation methods of 2-, 3- and 4-mono-O-methyl-, as well as 2,3-, 2,4- and 3,4-di-O-methyl-L-arabinose are described starting from exo and endo benzyl 3,4-O-benzylidene-β-L-arabinopyranoside, respectively. 1H-NMR and GLC data are presented.