4’,5’-Bis(1,3,2-dithiarsolan-2-yl)-3’,6’-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9’-[9H]xanthene]-6-carboxylic Acid CAS 1042084-20-7

Purity 97%+In StockPharmaceutical Standards
CAS No.1042084-20-7
Molecular FormulaC25H18As2O7S4
Molecular Weight708.51 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4’,5’-Bis(1,3,2-dithiarsolan-2-yl)-3’,6’-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9’-[9H]xanthene]-6-carboxylic Acid CAS 1042084-20-7 chemical structure

Description

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 supplies 4’,5’-Bis(1,3,2-dithiarsolan-2-yl)-3’,6’-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9’-[9H]xanthene]-6-carboxylic Acid (CAS 1042084-20-7), a certified reference material (molecular formula C25H18As2O7S4, MW 708.51 g/mol) for analytical method development and quality control.

Structurally, 4’,5’-Bis(1,3,2-dithiarsolan-2-yl)-3’,6’-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9’-[9H]xanthene]-6-carboxylic Acid (C25H18As2O7S4) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 17.0, corresponding to approximately 17 ring(s) or double-bond equivalent(s). With a molecular weight of 708.51 g/mol, it falls into the high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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 FormulaC25H18As2O7S4
Molecular Weight708.51 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.)1988
Sulfur Atoms4

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