4-Hydroxy-5-methoxyquinoline-3-carboxylic acid CAS 873054-97-8
| CAS No. | 873054-97-8 |
| Molecular Formula | C11H9NO4 |
| Molecular Weight | 219.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Hydroxy-5-methoxyquinoline-3-carboxylic acid is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-Hydroxy-5-methoxyquinoline-3-carboxylic acid (CAS 873054-97-8), a certified reference material (molecular formula C11H9NO4, MW 219.19 g/mol) for analytical method development and quality control.
The molecular framework of 4-Hydroxy-5-methoxyquinoline-3-carboxylic acid (C11H9NO4) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Hydroxy-5-methoxyquinoline-3-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.
Physical & Chemical Properties
| Molecular Formula | C11H9NO4 |
| Molecular Weight | 219.19 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.) | 1987 |
| Nitrogen Atoms | 1 |
Related Hydroxy Standards
- 2-(7-Hydroxy-2-oxo-2h-chromen-4-yl)acetamide (CAS 101999-45-5)
- 4-Hydroxy-7-methoxyquinoline-6-carboxylic acid (CAS 1190837-18-3)
- N-(4-hydroxy-2-oxo-2H-chromen-3-yl)acetamide (CAS 13948-45-3)
- Methyl 4-hydroxy-1-oxo-1,2-dihydroisoquinoline-3-carboxylate (CAS 13972-97-9)
- 3-hydroxy-7-methoxyquinoline-4-carboxylic acid (CAS 1487292-95-4)
- 5-Hydroxy-3-phenylisoxazole-4-carboxylic acid (CAS 15969-44-5)
- 2-Hydroxy-8-methoxyquinoline-3-carboxylic acid (CAS 169321-92-0)
- 5-Hydroxy-2-methyl-1-oxo-1,2-dihydroisoquinoline-6-carboxylic acid (CAS 1783406-37-0)
Recommended Standards
- 4-Hydroxy-1-methyl-2-oxo-1,2-dihydroquinoline-3-carboxylic acid (CAS 57931-81-4)
- 4-Hydroxy-6-methoxyquinoline-2-carboxylic acid (CAS 91092-95-4)
- 4-Fluoro-2-(methylsulfonyl)nitrobenzene (CAS 78228-02-1)
- 4-Hydroxy-6-methoxyquinoline-3-carboxylic acid (CAS 28027-16-9)
- Methyl 2-(5-bromo-2-cyano-3-methylphenyl)acetate (CAS 1807020-46-7)
- (4-Chloro-3-fluorophenyl)(5-methylthiophen-2-yl)methanol (CAS 1443328-78-6)
- 7-Chloroisoquinoline (CAS 34784-06-0)
- 2-(3'-Acetyl-[1,1'-biphenyl]-3-yl)aceticacid (CAS 886363-13-9)
- O-(4-fluorophenyl)hydroxylamine (CAS 99907-86-5)
- Mifepristone Impurity 13 (CAS 84371-57-3)
- Methyl 5-bromo-2-chloro-6-(trifluoromethyl)pyridine-3-carboxylate (CAS 1256837-19-0)
- Tert-butyl 3-(pyrimidin-4-ylamino)azetidine-1-carboxylate (CAS 1380300-87-7)
- 2-(Phenylsulfonyl)-3H-pyrrolizine (CAS 90601-61-9)
- Polymyxin B nonapeptide (CAS 86408-36-8)
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