5,5'-((Thiobis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) CAS 52256-85-6

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5,5'-((Thiobis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione).

5,5'-((Thiobis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (CAS 52256-85-6), molecular formula C28H14O8S and molecular weight 510.47 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 5,5'-((Thiobis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (C28H14O8S) is characterized by a sulfone group, 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).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com