Fluorescein di-β-D-galactopyranoside CAS 17817-20-8

Purity 97%+In StockPharmaceutical Standards
CAS No.17817-20-8
Molecular FormulaC32H32O15
Molecular Weight656.59 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Fluorescein di-β-D-galactopyranoside CAS 17817-20-8 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 Fluorescein di-β-D-galactopyranoside.

Fluorescein di-β-D-galactopyranoside (CAS 17817-20-8) is a high-purity analytical reference standard with the molecular formula C32H32O15 and a molecular weight of 656.59 g/mol.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Fluorescein di-β-D-galactopyranoside is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 656.59 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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.

CATO manufactures Fluorescein di-β-D-galactopyranoside under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC32H32O15
Molecular Weight656.59 g/mol
Purity97%+
StorageStore at room temperature, 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)17.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962

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