3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-thioxanthen]-3-one CAS 94109-78-1

Purity 97%+In StockPharmaceutical Standards
CAS No.94109-78-1
Molecular FormulaC20H12O4S
Molecular Weight348.37 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-thioxanthen]-3-one CAS 94109-78-1 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 348.37 g/mol gives 3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-thioxanthen]-3-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-thioxanthen]-3-one (CAS 94109-78-1), a certified reference material (molecular formula C20H12O4S, MW 348.37 g/mol) for analytical method development and quality control.

Structurally, 3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-thioxanthen]-3-one (C20H12O4S) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 348.37 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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), 3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-thioxanthen]-3-one 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 FormulaC20H12O4S
Molecular Weight348.37 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
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)15.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1983
Sulfur Atoms1

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