2-Methoxyquinoline-3-carboxylic acid CAS 70659-29-9
| CAS No. | 70659-29-9 |
| Molecular Formula | C11H9NO3 |
| Molecular Weight | 203.19 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, 2-Methoxyquinoline-3-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 203.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 2-Methoxyquinoline-3-carboxylic acid (CAS 70659-29-9), a certified reference material (molecular formula C11H9NO3, MW 203.19 g/mol) for analytical method development and quality control.
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 | C11H9NO3 |
| Molecular Weight | 203.19 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, ethanol, 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.) | 1977 |
| Nitrogen Atoms | 1 |
Related Methoxyquinoline Standards
- 2-methoxyquinoline-4-carboxylic Acid (CAS 10222-62-5)
- 8-Methoxyquinoline-4-carboxylic Acid (CAS 1092288-64-6)
- 7-Methoxyquinoline-8-carboxylic acid (CAS 1159427-80-1)
- 3-methoxyquinoline-4-carboxylic acid (CAS 1241386-37-7)
- 2-Methoxyquinoline-5-carboxylic acid (CAS 1339053-78-9)
- 5-Methoxyquinoline-3-carboxylic Acid (CAS 1361091-98-6)
- 2-Methoxyquinoline-7-carboxylic acid (CAS 1374258-40-8)
- 5-Methoxyquinoline-4-carboxylic acid (CAS 1474033-93-6)
Recommended Standards
- 2-Methoxy-6-nitronaphthalene (CAS 4900-67-8)
- 2-Methoxyquinoline-6-carboxylic acid (CAS 99472-03-4)
- 2-Methoxy-1-nitronaphthalene (CAS 4900-66-7)
- 2-Methyl-1-oxo-1,2-dihydroisoquinoline-3-carboxylic Acid (CAS 89806-32-6)
- 1-([1,2,4]triazolo[4,3-a]pyridin-3-ylthio)propan-2-one (CAS 442865-39-6)
- 7-Iodo-6-methoxy-4-methyl-1H-indazole (CAS 1352397-67-1)
- 1-Allyl-1H-pyrazole (CAS 35852-74-5)
- (R)-4-bromo-1-(pyrrolidin-3-yl)-1H-pyrazole (CAS 1428331-33-2)
- 2-Oxo-2,3-dihydro-1H-pyrrolo[3,2-b]pyridine-6-carbonitrile (CAS 1190322-82-7)
- 2-Benzyl-4-(methoxymethylene)oxazol-5(4H)-one (CAS 1212-44-8)
- Mirin (CAS 1198097-97-0)
- (5-Bromofuran-2-yl)(3-(3-(pyrazin-2-yl)-1,2,4-oxadiazol-5-yl)azetidin-1-yl)methanone (CAS 1327575-52-9)
- Blonanserin Impurity 38 (CAS CATO-C4X-111038)
- [β-Asp]9-Semaglutide (CAS CATO-CPTD788605)
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