2",3'-Dinitro-[1,1':4',1":4",1"'-quaterphenyl]-3,3'",5,5'"-tetracarboxylic acid CAS 2260884-23-7
| CAS No. | 2260884-23-7 |
| Molecular Formula | C28H16N2O12 |
| Molecular Weight | 572.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2",3'-Dinitro-[1,1':4',1":4",1"'-quaterphenyl]-3,3'",5,5'"-tetracarboxylic acid.
2",3'-Dinitro-[1,1':4',1":4",1"'-quaterphenyl]-3,3'",5,5'"-tetracarboxylic acid (CAS 2260884-23-7), molecular formula C28H16N2O12 and molecular weight 572.43 g/mol, is a CATO reference standard with documented purity and traceability.
2",3'-Dinitro-[1,1':4',1":4",1"'-quaterphenyl]-3,3'",5,5'"-tetracarboxylic acid (C28H16N2O12) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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
| Molecular Formula | C28H16N2O12 |
| Molecular Weight | 572.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 22.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Nitrogen Atoms | 2 |
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- Indacaterol Impurity 52 (CAS CATO-C4X-150052)
- Ethyl 3-(benzyloxy)-6-fluorobicyclo[3.1.0]hexane-6-carboxylate (CAS 1823316-44-4)
- 1-Phenylhexan-2-ol (CAS 25755-72-0)
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