6-{[(4-Ethylphenyl)(methyl)amino]sulfonyl}-4-oxo-1,4-dihydroquinoline-3-carboxylic acid CAS 434907-95-6
| CAS No. | 434907-95-6 |
| Molecular Formula | C19H18N2O5S |
| Molecular Weight | 386.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 386.42 g/mol gives 6-{[(4-Ethylphenyl)(methyl)amino]sulfonyl}-4-oxo-1,4-dihydroquinoline-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
6-{[(4-Ethylphenyl)(methyl)amino]sulfonyl}-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 434907-95-6), molecular formula C19H18N2O5S and molecular weight 386.42 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 6-{[(4-Ethylphenyl)(methyl)amino]sulfonyl}-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (C19H18N2O5S) 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 386.42 g/mol, it falls into the moderately-high-molecular-weight range. 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.
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 | C19H18N2O5S |
| Molecular Weight | 386.42 g/mol |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 6-(N-(3,4-dimethylphenyl)-N-methylsulfamoyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 434907-98-9)
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- 4-fluoro-22-oxa-1,5,8,13,15,26-hexaazatetracyclo[19.3.1.1¹⁰,¹⁴.0²,⁷]hexacosa-2,4,6,10,12,14(26)-hexaen-9-one (CAS 2227259-22-3)
- Benzyl (1-((4-fluoro-3-oxobutan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)carbamate (CAS 96922-64-4)
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- N-(5-Formyl-2-thienyl)acetamide (CAS 31167-35-8)
- Eptifibatide Impurity 7 (CAS CATO-C4X-23457)
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