2,2'-(1,4-Phenylene)bis(quinoline-4-carboxylic acid) CAS 314022-35-0
| CAS No. | 314022-35-0 |
| Molecular Formula | C26H16N2O4 |
| Molecular Weight | 420.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2,2'-(1,4-Phenylene)bis(quinoline-4-carboxylic acid) (CAS 314022-35-0), molecular formula C26H16N2O4 and molecular weight 420.42 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,2'-(1,4-Phenylene)bis(quinoline-4-carboxylic acid) (C26H16N2O4) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 20.0, corresponding to approximately 20 ring(s) or double-bond equivalent(s). With a molecular weight of 420.42 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).
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 | C26H16N2O4 |
| Molecular Weight | 420.42 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) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Phenylene Standards
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Recommended Standards
- 2-(4-Aminophenyl)-2H-naphtho[1,2-d][1,2,3]triazole-6,8-disulfonic acid (CAS 63251-40-1)
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- 1-(9-((2R,4S,5R)-4-Hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-6-yl)-3-(naphthalen-1-yl)urea (CAS 658712-93-7)
- Diethyl 2,2'-(butane-1,4-diylbis(azanediyl))bis(6-oxo-1,6-dihydropyrimidine-5-carboxylate) (CAS 92736-10-2)
- Ethyl 5a-methyl-1,4,4a,5,5a,6-hexahydrocyclopropa[f]indazole-3-carboxylate (CAS 2060596-52-1)
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- 6-Bromo-N'-hydroxypyridine-3-carboximidamide (CAS 1415144-06-7)
- 2-Fluoro-4-(5-hydroxy-3-(trifluoromethyl)-1H-pyrazol-1-yl)benzenesulfonamide (CAS 358742-72-0)
- Bis(ethylamino)-tert-butylamino-s-triazine (CAS 35651-07-1)
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- (20R)-13(17)-Diacholestene (CAS 82079-08-1)
- PROPYL-2-METHYLPYRAZINE, 3- (CAS 15986-80-8)
- N-Hydroxypyridazine-4-carboxamide (CAS 96054-52-3)
- Allo-D-Ile27-Tirzepatide (CAS CATO-CPTD788961)
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