4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride CAS 38103-06-9

Purity >95%In StockPharmaceutical Standards
CAS No.38103-06-9
Molecular FormulaC31H20O8
Molecular Weight520.49 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride CAS 38103-06-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 520.49 g/mol gives 4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride (CAS 38103-06-9) is a high-purity analytical reference standard with the molecular formula C31H20O8 and a molecular weight of 520.49 g/mol.

The molecular framework of 4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride (C31H20O8) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), 4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride 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 FormulaC31H20O8
Molecular Weight520.49 g/mol
AppearancePale yellow to yellow crystalline powder
Purity>95%
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)22.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1967

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