Ethyl 6,7-Dimethoxyquinoline-3-carboxylate CAS 5278-39-7
| CAS No. | 5278-39-7 |
| Molecular Formula | C14H15NO4 |
| Molecular Weight | 261.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 6,7-Dimethoxyquinoline-3-carboxylate (CAS 5278-39-7), molecular formula C14H15NO4 and molecular weight 261.27 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C14H15NO4, Ethyl 6,7-Dimethoxyquinoline-3-carboxylate contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 261.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C14H15NO4 |
| Molecular Weight | 261.27 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1958 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- Ethyl 5,8-dimethoxyquinoline-3-carboxylate (CAS 71083-24-4)
- Methyl 3,8-dimethoxyquinoline-6-carboxylate (CAS 2721376-44-7)
- Methyl 4,8-Dimethoxyquinoline-2-carboxylate (CAS 76995-87-4)
- 3-Benzyl-2,6-dimethoxyquinoline (CAS 918518-76-0)
- 6,7-Dimethoxyquinoline-2-carboxylic acid (CAS 122234-49-5)
- 2,6-Dimethoxyquinoline-3-carboxylic acid (CAS 929343-44-2)
- 4,6-dimethoxyquinoline-2-carboxylic acid (CAS 52144-22-6)
- 4,8-Dimethoxyquinoline-2-carboxylic acid (CAS 28027-15-8)
Recommended Standards
- Ethyl 5-acetamido-3-methylbenzofuran-2-carboxylate (CAS 99252-61-6)
- Ethyl 6-ethoxy-4-hydroxyquinoline-3-carboxylate (CAS 303121-08-6)
- Ethyl 6-methoxy-1-methyl-2-oxo-1,2-dihydroquinoline-4-carboxylate (CAS 66695-42-9)
- Ethyl 5-(2-ethoxyphenyl)isoxazole-3-carboxylate (CAS 668971-91-3)
- (4-Methoxyphenyl)methanesulfonyl fluoride (CAS 1892495-27-0)
- 3-Fluoroquinolin-6-amine (CAS 1820618-15-2)
- 4-Benzyl-1H-pyrrole-3-carboxylic acid (CAS 79600-80-9)
- 4-Chloro-2-fluorophenylzinc iodide 0.5 M in Tetrahydrofuran (CAS 518989-99-6)
- N-(3-Chlorophenyl)-cyanamide (CAS 54507-99-2)
- (R)-5-Ethyl-5-phenylimidazolidine-2,4-dione (CAS 65567-32-0)
- Rosuvastatin Impurity 201 (CAS CATO-C4X-1169201)
- 8-Oxo-7-azaspiro[3.5]nonane-5-carboxylic acid (CAS 2098142-54-0)
- (4-(2-(4-((Tert-butyldiphenylsilyl)oxy)piperidin-1-yl)ethoxy)-3-chlorophenyl)boronic acid (CAS 1704074-62-3)
- D-[Ser]11-Semaglutide (CAS CATO-CPTD788629)
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