Sodium 5,5'-((((azanediylbis(1-hydroxy-3-sulfonatonaphthalene-6,2-diyl))bis(diazene-2,1-diyl))bis(2,5-dimethoxy-4,1-phenylene))bis(diazene-2,1-diyl))bis(2-hydroxybenzoate) CAS 6548-31-8

Purity 97%+In StockPharmaceutical Standards
CAS No.6548-31-8
Molecular FormulaC50H35N9O18S2
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Sodium 5,5'-((((azanediylbis(1-hydroxy-3-sulfonatonaphthalene-6,2-diyl))bis(diazene-2,1-diyl))bis(2,5-dimethoxy-4,1-phenylene))bis(diazene-2,1-diyl))bis(2-hydroxybenzoate) CAS 6548-31-8 chemical structure

Description

Sodium 5,5'-((((azanediylbis(1-hydroxy-3-sulfonatonaphthalene-6,2-diyl))bis(diazene-2,1-diyl))bis(2,5-dimethoxy-4,1-phenylene))bis(diazene-2,1-diyl))bis(2-hydroxybenzoate) (CAS 6548-31-8), molecular formula C50H35N9O18S2Na and molecular weight 1136.98 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of Sodium 5,5'-((((azanediylbis(1-hydroxy-3-sulfonatonaphthalene-6,2-diyl))bis(diazene-2,1-diyl))bis(2,5-dimethoxy-4,1-phenylene))bis(diazene-2,1-diyl))bis(2-hydroxybenzoate) (C50H35N9O18S2Na) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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), Sodium 5,5'-((((azanediylbis(1-hydroxy-3-sulfonatonaphthalene-6,2-diyl))bis(diazene-2,1-diyl))bis(2,5-dimethoxy-4,1-phenylene))bis(diazene-2,1-diyl))bis(2-hydroxybenzoate) 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 FormulaC50H35N9O18S2 4*Na
Molecular Weight1136.98 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)38.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1958
Nitrogen Atoms9
Sulfur Atoms2

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