3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one, potassium salt CAS 6417-85-2

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one, potassium salt.

3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one, potassium salt (CAS 6417-85-2), molecular formula C20H12O5K and molecular weight 371.41 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a flavonoid core, a hydroxyl group, an ether linkage, 3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one, potassium salt is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 371.41 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.

As a certified reference material (CRM), 3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one, potassium salt 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

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