Ponceau SX CAS 4548-53-2
| CAS No. | 4548-53-2 |
| Molecular Formula | C18H14N2O7S2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ponceau SX (CAS 4548-53-2), a certified reference material (molecular formula C18H14N2O7S2Na, MW 457.43 g/mol) for analytical method development and quality control.
Based on its molecular formula C18H14N2O7S2Na, Ponceau SX contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 457.43 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), Ponceau SX 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 Formula | C18H14N2O7S2 2*Na |
| Molecular Weight | 457.43 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Ponceau Standards
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- (5-Cyano-2-methylthiophen-3-yl)boronic acid (CAS 1310384-25-8)
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- Levosimendan Impurity 30 (CAS CATO-C4X-130830)
- 5-Bromo-2-[(2-chloro-4-fluorobenzyl)oxy]-benzoyl chloride (CAS 1160250-64-5)
- (3-(Difluoromethyl)-1-methyl-1H-pyrazol-5-yl)methanol (CAS 1383471-33-7)
- Glucagon-like peptide 2 (CAS 89750-15-2)
Why CATO?
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