Ethyl 3-ethylquinoline-4-carboxylate CAS 21233-74-9
| CAS No. | 21233-74-9 |
| Molecular Formula | C14H15NO2 |
| Molecular Weight | 229.27 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.
Ethyl 3-ethylquinoline-4-carboxylate (CAS 21233-74-9), molecular formula C14H15NO2 and molecular weight 229.27 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Ethyl 3-ethylquinoline-4-carboxylate (C14H15NO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 229.27 g/mol, it falls into the medium-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).
As a certified reference material (CRM), Ethyl 3-ethylquinoline-4-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C14H15NO2 |
| Molecular Weight | 229.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- 2-Ethylquinoline-8-sulfonamide (CAS 157686-38-9)
- 6-Ethylquinoline-8-sulfonic acid (CAS 103989-16-8)
- Methyl 2-ethylquinoline-4-carboxylate (CAS 337956-30-6)
- 7-Ethylquinoline-2,3-dicarboxylic acid (CAS 948290-58-2)
- 8-Ethylquinoline-2,3-dicarboxylic acid (CAS 948291-43-8)
- 71082-56-9 8-Ethylquinoline-3-carboxylic acid DTXSID30589191 (CAS 71082-56-9)
- 2-Ethylquinoline-8-carboxylic acid (CAS 1312339-14-2)
- 8-Ethylquinoline-4-carboxylic acid (CAS 1502573-44-5)
Recommended Standards
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- Ethyl 4-benzyl-1H-pyrrole-3-carboxylate (CAS 352616-19-4)
- 5,6,7-Trimethoxy-1H-indole-2-carbohydrazide (CAS 893730-25-1)
- methyl 1-cyclopropyl-1H-imidazole-4-carboxylate (CAS 1260655-08-0)
- 4-Ethoxy-3-(propan-2-yl)benzene-1-sulfonamide (CAS 1094537-20-8)
- 1-tert-butyl 2-methyl (2R,3S)-3-hydroxypyrrolidine-1,2-dicarboxylate (CAS 130966-41-5)
- Methyl 2-(2-chloro-5-(trifluoromethyl)phenyl)-2-oxoacetate (CAS 2095410-12-9)
- 7-Methoxybenzo[d]oxazole (CAS 175211-12-8)
- Ropinirole Impurity 1 (CAS 91374-24-2)
- 1-Benzyl-3-(trifluoromethyl)pyrrolidin-3-ol (CAS 1211580-89-0)
- N-methyltetrahydro-2H-pyran-4-sulfonamide (CAS 1249039-87-9)
- Semaglutide impurity 60 (CAS CATO-C4X-222660)
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