9,9´-Bis[xanthenyliden] CAS 517-45-3

Purity 97%+In StockPharmaceutical Standards
CAS No.517-45-3
Molecular FormulaC26H16O2
Molecular Weight360.40 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

9,9´-Bis[xanthenyliden] CAS 517-45-3 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 360.40 g/mol gives 9,9´-Bis[xanthenyliden] distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

9,9´-Bis[xanthenyliden] (CAS 517-45-3) is a high-purity analytical reference standard with the molecular formula C26H16O2 and a molecular weight of 360.40 g/mol.

9,9´-Bis[xanthenyliden] (C26H16O2) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC26H16O2
Molecular Weight360.40 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)19.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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