4-Methoxy-6-oxo-1,6-dihydropyridine-3-carboxylic acid CAS 57658-59-0
| CAS No. | 57658-59-0 |
| Molecular Formula | C7H7NO4 |
| Molecular Weight | 169.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Methoxy-6-oxo-1,6-dihydropyridine-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.
4-Methoxy-6-oxo-1,6-dihydropyridine-3-carboxylic acid (CAS 57658-59-0), molecular formula C7H7NO4 and molecular weight 169.13 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 4-Methoxy-6-oxo-1,6-dihydropyridine-3-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 169.13 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).
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 | C7H7NO4 |
| Molecular Weight | 169.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 1 |
Related Methoxy Standards
- 5-Methoxy-4-oxo-1,4-dihydropyridine-2-carboxylic acid (CAS 103878-37-1)
- 5-Methoxy-6-oxo-1,6-dihydropyridine-2-carboxylic acid (CAS 112750-29-5)
- 4-Methoxy-6-oxo-1,6-dihydropyridine-2-carboxylic acid (CAS 1393532-27-8)
- 4-Methoxy-3-nitrophenol (CAS 15174-02-4)
- 4-Methoxy-2-nitrophenol (CAS 1568-70-3)
- 2-Methoxy-6-nitrophenol (CAS 15969-08-1)
- 3-Methoxy-4-nitrophenol (CAS 16292-95-8)
- 5-Methoxy-2-oxo-1,2-dihydropyridine-3-carboxylic acid (CAS 1864052-01-6)
Recommended Standards
- 4-Methoxy-2-oxo-1,2-dihydropyridine-3-carboxylic acid (CAS 87853-70-1)
- 5-(Hydroxymethyl)-2-nitrophenol (CAS 61161-83-9)
- 4-Hydroxy-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxylic acid (CAS 846557-80-0)
- 5-(Methoxycarbonyl)-1H-pyrrole-3-carboxylic acid (CAS 67858-48-4)
- 3-Fluoro-3-phenylpyrrolidine hydrochloride (CAS 1803603-31-7)
- N-Benzyl-N-(1H-indol-6-ylmethyl)amine (CAS 1017791-17-1)
- [1,3]Oxathiolo[5,4-c]pyridin-6-ylmethanol (CAS 872714-71-1)
- (S)-1-(1H-pyrazol-4-yl)ethan-1-amine (CAS 1927867-67-1)
- (7-Azaspiro[3.5]Nonan-2-yl)methanamine (CAS 1374658-92-0)
- rel-(1S,2R)-2-Amino-1,2-diphenylethanol (CAS 23412-95-5)
- Tert-butyl 7-hydroxyoctahydro-2H-pyrido[1,2-a]pyrazine-2-carboxylate (CAS 1779643-85-4)
- 3-Azabicyclo[3.3.1]nonan-9-one (CAS 86949-84-0)
- 3-Amino-3-(2-aminophenyl)propan-1-ol (CAS 886364-15-4)
- Cycloaspeptide D (CAS 691363-62-9)
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