6-Nitro-2,4-diphenylquinoline CAS 138432-74-3
| CAS No. | 138432-74-3 |
| Molecular Formula | C21H14N2O2 |
| Molecular Weight | 326.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 6-Nitro-2,4-diphenylquinoline (CAS 138432-74-3), a certified reference material (molecular formula C21H14N2O2, MW 326.35 g/mol) for analytical method development and quality control.
Structurally, 6-Nitro-2,4-diphenylquinoline (C21H14N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 326.35 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C21H14N2O2 |
| Molecular Weight | 326.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 2 |
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- 3-Aminothiane-3-carbonitrile (CAS 1343219-56-6)
- 2-(6-Chloro-2-(5-chloropyridin-2-yl)imidazo[1,2-a]pyridin-3-yl)acetonitrile (CAS 88571-17-9)
- N-(3-Chloro-2,4-difluorophenyl)-6-hydroxy-1-methyl-2-oxo-1,2-dihydropyrimidine-4-carboxamide (CAS 861208-51-7)
- 1h-Pyrazole-4-carbothioamide (CAS 1017781-31-5)
- 4-Chlorophenyl 2-chloro-4-(trifluoromethyl)thiazole-5-carboxylate (CAS 72860-48-1)
- 4-Aminopyridine-3-thiol hydrochloride (CAS 173069-45-9)
- N-Methyl-N,4-bis(tosylmethyl)aniline (CAS 194932-04-2)
- Semaglutide impurity 94 (CAS CATO-C4X-222694)
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