1-Ethyl-2-oxo-1,2-dihydroquinoline-3-carboxylic acid CAS 67984-95-6
| CAS No. | 67984-95-6 |
| Molecular Formula | C12H11NO3 |
| Molecular Weight | 217.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 1-Ethyl-2-oxo-1,2-dihydroquinoline-3-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 217.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
1-Ethyl-2-oxo-1,2-dihydroquinoline-3-carboxylic acid (CAS 67984-95-6) is a high-purity analytical reference standard with the molecular formula C12H11NO3 and a molecular weight of 217.22 g/mol.
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 | C12H11NO3 |
| Molecular Weight | 217.22 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 1 |
Recommended Standards
- 1-Benzyl-5-methyl-3-nitro-1h-pyrazole (CAS 898053-54-8)
- 1-Ethyl-3-formyl-1H-indole-2-carboxylic acid (CAS 78358-23-3)
- 1-Benzyl-5-methyl-1H-1,2,3-triazole-4-carboxylic acid (CAS 54698-60-1)
- 1-Ethyl-4-hydroxy-2-oxo-1,2-dihydroquinoline-3-carbaldehyde (CAS 65740-50-3)
- 1-(3-Methoxypropyl)-3-phenylthiourea (CAS 55409-87-5)
- 3-Cyanocinnamic Acid (CAS 16642-93-6)
- 6-Phenylpiperidin-2-one (CAS 41419-25-4)
- 5-(Ethoxycarbonyl)-3-methyl-1H-indole-2-carboxylic acid (CAS 1312690-33-7)
- 2-sulfamoylbenzamide (CAS 36547-00-9)
- 1-(5-(2-nitro-4-(trifluoromethyl)phenyl)furan-2-yl)-N-phenylmethanimine oxide (CAS 647824-24-6)
- 5-Bromo-2,3,4,4a,9,9a-hexahydro-1H-pyrido[3,4-b]indol-1-one (CAS 1075253-13-2)
- 1-Boc-4-(2-chloro-6-nitrophenyl)piperazine (CAS 400803-05-6)
- Propachlor Ethane Sulfonic Acid (Esa) Sodium Salt (CAS 947601-88-9)
- Semaglutide Impurity 138 (CAS CATO-C4X-2226138)
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