4-Acetamido-4'-nitrostilbene-2,2'-disulfonic acid disodium salt CAS 78211-77-5
| CAS No. | 78211-77-5 |
| Molecular Formula | C16H12N2O9S2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Acetamido-4'-nitrostilbene-2,2'-disulfonic acid disodium 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.
4-Acetamido-4'-nitrostilbene-2,2'-disulfonic acid disodium salt (CAS 78211-77-5), molecular formula C16H12N2O9S2Na and molecular weight 463.39 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Acetamido-4'-nitrostilbene-2,2'-disulfonic acid disodium salt (C16H12N2O9S2Na) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 463.39 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C16H12N2O9S2 2*Na |
| Molecular Weight | 463.39 g/mol |
| Purity | 97%+ |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
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