Гетерозид

Description

Heteroside (also known as heteronoside) is a natural flavonoid glycoside. Systematic designation: 4H-1-benzopyran-4-one, 3-[[6-O-[6-deoxy-3-O-(4-hydroxy-3,5-dimethoxybenzoyl)-α-L-mannopyranosyl]-β-D-galactopyranosyl]oxy]-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-. Structurally, it is quercetin, in which the hydroxyl at position 3 is replaced by a disaccharide residue: β-D-galactose connected to α-L-rhamnose, and the rhamnose is additionally acylated with syringic (4-hydroxy-3,5-dimethoxybenzoic) acid. It is isolated from the herb Leonurus artemisia (motherwort). Registration in PubChem - CID 46930141.

Basic Attributes

• CAS No: 852638-61-0
• Chemical formula: C36H38O20
• Molecular weight: 790.7
• Exact weight: 790.19564360

Structure

• Aglycone: quercetin is a flavonol with a 3',4'-dihydroxyphenyl ring B and hydroxyls at positions 5 and 7
• Glycosidic part: β-D-galactopyranose at position 3, α-L-rhamnose (6-deoxymannopyranose) is attached to it via a 6-O bond
• Acyl fragment: syringic acid residue at position 3 of rhamnose

Purpose

Standard sample for phytochemical work: identification and quantitative determination of motherwort flavonoid glycosides using HPLC methods with diode array and mass spectrometric detection, confirmation of the authenticity of raw materials and extracts, certification of analytical methods.

Storage and handling

Supplied in laboratory quantities. Store in a tightly closed container away from light and moisture: polyphenolic glycosides with phenolic hydroxyls are prone to oxidation, and the ester bond of the acyl residue is sensitive to hydrolysis in an alkaline environment. There are no data on hazard classification, transport labeling and toxicology in the original card - work according to the general rules for handling organic reagents.