(2R,3S)-2-(3,4-Dihydroxyphenyl)-3,4-dihydro-8-(phenylmethyl)-2H-1-benzopyran-3,5,7-triol CAS 20728-79-4

Purity 97%+In StockPharmaceutical Standards
CAS No.20728-79-4
Molecular FormulaC22H20O6
Molecular Weight380.39 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(2R,3S)-2-(3,4-Dihydroxyphenyl)-3,4-dihydro-8-(phenylmethyl)-2H-1-benzopyran-3,5,7-triol CAS 20728-79-4 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (2R,3S)-2-(3,4-Dihydroxyphenyl)-3,4-dihydro-8-(phenylmethyl)-2H-1-benzopyran-3,5,7-triol.

(2R,3S)-2-(3,4-Dihydroxyphenyl)-3,4-dihydro-8-(phenylmethyl)-2H-1-benzopyran-3,5,7-triol (CAS 20728-79-4) is a high-purity analytical reference standard with the molecular formula C22H20O6 and a molecular weight of 380.39 g/mol.

(2R,3S)-2-(3,4-Dihydroxyphenyl)-3,4-dihydro-8-(phenylmethyl)-2H-1-benzopyran-3,5,7-triol (C22H20O6) contains a flavonoid core, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

As a certified reference material (CRM), (2R,3S)-2-(3,4-Dihydroxyphenyl)-3,4-dihydro-8-(phenylmethyl)-2H-1-benzopyran-3,5,7-triol meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC22H20O6
Molecular Weight380.39 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962

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