5-Fluoro-6-oxo-5,6-dihydropyridine-2-carboxylic Acid CAS 1189757-55-8
| CAS No. | 1189757-55-8 |
| Molecular Formula | C6H4FNO3 |
| Molecular Weight | 157.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Fluoro-6-oxo-5,6-dihydropyridine-2-carboxylic Acid is closely related to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Fluoro-6-oxo-5,6-dihydropyridine-2-carboxylic Acid (CAS 1189757-55-8), molecular formula C6H4FNO3 and molecular weight 157.10 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system, 5-Fluoro-6-oxo-5,6-dihydropyridine-2-carboxylic Acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 157.10 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C6H4FNO3 |
| Molecular Weight | 157.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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, water |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Fluoro Standards
- 2-Fluoro-5-hydroxyisonicotinic acid (CAS 1211515-83-1)
- 3-Fluoro-4-hydroxypicolinic acid (CAS 1211526-11-2)
- 6-Fluoro-5-hydroxynicotinic acid (CAS 1211531-78-0)
- 6-Fluoro-3-hydroxypicolinic acid (CAS 1211592-06-1)
- 2-Fluoro-5-hydroxynicotinic acid (CAS 1227508-69-1)
- 2-Fluoro-3-hydroxyisonicotinic acid (CAS 1227576-95-5)
- 2-Fluoro-6-oxo-1,6-dihydropyridine-3-carboxylic acid (CAS 1227594-56-0)
- 3-Fluoro-5-nitropyridin-2-amine (CAS 1232432-08-4)
Recommended Standards
- 2-Amino-5-trifluoromethyl-1,3,4-oxadiazole 5-(trifluoromethyl)-1,3,4-oxadiazol-2-amine 5-trifluoromethyl-1,3,4-oxadiazol-2-ylamine 768-29-6 (CAS 768-29-6)
- LEP32VQU4C 6974-29-4 N-Trifluoroacetyl-2-aminoethanol 2,2,2-Trifluoro-N-(2-hydroxyethyl)acetamide NSC 23685 N-Trifluoroacetyl-ethanolamine UNII-LEP32VQU4C (CAS 6974-29-4)
- Methyl 2-amino-3,3,3-trifluoropropanoate (CAS 27240-44-4)
- 4,4,4-Trifluoro-3-hydroxybutanamide (CAS 453-34-9)
- Ethyl 1-(1-methylcyclohexyl)-1H-pyrazole-4-carboxylate (CAS 2504239-22-7)
- 4-Bromo-2-fluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1150561-79-7)
- 1-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)sulfonyl)-4-((4-methoxyphenyl)sulfonyl)piperazine (CAS 562867-96-3)
- 2-(dimethylamino)-2-oxidanylidene-ethanoic acid 2-(dimethylamino)-2-oxoacetic acid 32833-96-8 A821448 (CAS 32833-96-8)
- 1,2-Bis(2-fluorophenyl)-2-hydroxyethan-1-one (CAS 125652-30-4)
- 4'-((Methoxycarbonyl)amino)-[1,1'-biphenyl]-2-carboxylic acid (CAS 1375068-86-2)
- 2-methyl-3-(2-methyl-1H-imidazol-1-yl)propanoic acid (CAS 696646-15-8)
- (4,4-Difluorocyclohex-1-en-1-yl)boronic acid (CAS 1401165-15-8)
- 5-(Cyclopropylmethyl)-2-methylphenol (CAS 1243353-88-9)
- Semaglutide impurity 261 (CAS CATO-C4X-2226261)
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