2-(3,4-Dimethoxyphenyl)-6,8-dimethylquinoline-4-carboxylic acid CAS 492997-55-4
| CAS No. | 492997-55-4 |
| Molecular Formula | C20H19NO4 |
| Molecular Weight | 337.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-(3,4-Dimethoxyphenyl)-6,8-dimethylquinoline-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-(3,4-Dimethoxyphenyl)-6,8-dimethylquinoline-4-carboxylic acid (CAS 492997-55-4), molecular formula C20H19NO4 and molecular weight 337.37 g/mol, is a CATO reference standard with documented purity and traceability.
2-(3,4-Dimethoxyphenyl)-6,8-dimethylquinoline-4-carboxylic acid (C20H19NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C20H19NO4 |
| Molecular Weight | 337.37 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Related Dimethoxyphenyl Standards
- (4Z)-4-{[(2,4-dimethoxyphenyl)amino]methylidene}-3-methyl-1-phenyl-4,5-dihydro-1H-pyrazol-5-one (CAS 320425-02-3)
- 2-((3,5-Dimethoxyphenyl)amino)-N-(isoquinolin-6-yl)acetamide (CAS 920513-62-8)
- 2-(2,5-Dimethoxyphenyl)-6,8-dimethylquinoline-4-carboxylic acid (CAS 897554-62-0)
- 2-(2,5-Dimethoxyphenyl)-7,8-dimethylquinoline-4-carboxylic acid (CAS 895966-70-8)
- 2-(3,4-Dimethoxyphenyl)-6-methylquinoline-4-carbohydrazide (CAS 590355-39-8)
- 4-((2,4-Dimethoxyphenyl)amino)-4-oxo-2-(piperazin-1-yl)butanoic acid (CAS 899964-63-7)
- 2-(3,4-Dimethoxyphenyl)ethyl N-(3-methoxythiophen-2-yl)carbamate (CAS 477845-96-8)
- 8-(2,5-Dimethoxyphenyl)-6-methyl-3,4,5,8-tetrahydro-2H-1,4-ethano-1,5-naphthyridine-7-carbonitrile (CAS 860644-72-0)
Recommended Standards
- 2-(3-(2-Phenyl-1,3-dioxolan-2-yl)propyl)isoindoline-1,3-dione (CAS 3308-99-4)
- 2-(2-Methylpropyl)-1,3-dioxo-n-[(pyridin-3-yl)methyl]-2,3-dihydro-1h-isoindole-5-carboxamide (CAS 518022-01-0)
- 2-(tert-Butoxycarbonyl)-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid (CAS 738629-59-9)
- 2-(tert-Butoxycarbonyl)-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (CAS 317806-26-1)
- Talc (CAS 14807-96-6)
- 8-Hydroxyisoquinoline-5-carbaldehyde (CAS 1824359-85-4)
- 4-Chloro-2,5-dimethylbenzoic acid (CAS 90649-77-7)
- (Z)-2-cyano-3-(1h-indol-3-yl)acrylicacid (CAS 1453484-21-3)
- 1-(4-Chloro-1h-pyrrole-2-carbonyl)-3-methylpyrrolidine-3-carboxylic acid (CAS 1409856-65-0)
- 3-(4-Hydroxy-3,5-diisopropylphenyl)acrylic acid (CAS 106392-42-1)
- 2-(Cyclopentylmethoxy)acetic acid (CAS 933758-38-4)
- Sodium 2-((tert-butoxycarbonyl)amino)pyrimidine-5-thiolate (CAS 1956340-35-4)
- Mirtazapine Impurity 26 (CAS CATO-C4X-151126)
- Semaglutide impurity 40 (CAS CATO-C4X-222640)
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