2-Chloro-6-methoxyquinoline-4-carboxylic acid CAS 20335-34-6
| CAS No. | 20335-34-6 |
| Molecular Formula | C11H8ClNO3 |
| Molecular Weight | 237.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-Chloro-6-methoxyquinoline-4-carboxylic acid 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.
2-Chloro-6-methoxyquinoline-4-carboxylic acid (CAS 20335-34-6), molecular formula C11H8ClNO3 and molecular weight 237.64 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H8ClNO3, 2-Chloro-6-methoxyquinoline-4-carboxylic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 237.64 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.
Physical & Chemical Properties
| Molecular Formula | C11H8ClNO3 |
| Molecular Weight | 237.64 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 3-Chloro-5-cyclopropylpyrazolo[1,5-a]pyrimidine-7-carboxylic acid (CAS 1011354-08-7)
- 2-Chloro-8-methoxyquinoline-3-carboxylic acid (CAS 1017157-83-3)
- 6-Chloro-4-hydroxy-2-methylquinoline-3-carboxylic acid (CAS 103566-34-3)
- 1-(3-Chloro-2-methylphenyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1042534-76-8)
- 1-(3-Chloro-4-methylphenyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1042604-53-4)
- 2-Chloro-6-hydroxy-7-methoxyquinoline-3-carbaldehyde (CAS 1046138-52-6)
- Methyl 8-chloro-4-hydroxyquinoline-2-carboxylate (CAS 1065074-57-8)
- 2-(8-Chloro-4-oxoquinolin-1(4H)-yl)acetic acid (CAS 1092288-62-4)
Recommended Standards
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- 2-Chloro-N-(5-methylisoxazol-3(2h)-ylidene)nicotinamide (CAS 541534-75-2)
- Propylsilanetriyl triacetate (CAS 17865-07-5)
- 5-Amino-1-(3-(trifluoromethyl)pyridin-2-yl)-1H-pyrazole-4-carbonitrile (CAS 1019010-69-5)
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- N-((4-Allyl-5-mercapto-4H-1,2,4-triazol-3-yl)methyl)-4-fluorobenzamide (CAS 1024135-26-9)
- 7-(3,4-Dichlorophenyl)pyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 320417-13-8)
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