5-Fluoro-2-methoxypyridine 1-oxide CAS 51173-07-0
| CAS No. | 51173-07-0 |
| Molecular Formula | C6H6FNO2 |
| Molecular Weight | 143.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Fluoro-2-methoxypyridine 1-oxide 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.
CATO supplies 5-Fluoro-2-methoxypyridine 1-oxide (CAS 51173-07-0), a certified reference material (molecular formula C6H6FNO2, MW 143.12 g/mol) for analytical method development and quality control.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system, 5-Fluoro-2-methoxypyridine 1-oxide is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 143.12 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).
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 | C6H6FNO2 |
| Molecular Weight | 143.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Fluoro Standards
- 5-Fluoro-4-methoxypyridin-3-ol (CAS 1184172-37-9)
- 2-Fluoro-4-hydroxy-3-methoxypyridine (CAS 1184172-38-0)
- 5-Fluoro-3-(hydroxymethyl)pyridin-2(1H)-one (CAS 1227494-41-8)
- 2-Fluoro-5-hydroxy-3-methoxypyridine (CAS 1227511-69-4)
- 3-fluoro-5-methoxypyridin-2-ol (CAS 1227511-78-5)
- 3-Fluoro-4-hydroxy-2-methoxypyridine (CAS 1227511-87-6)
- 2-Fluoro-5-methoxypyridin-3-ol (CAS 1227593-83-0)
- 5-Fluoro-3-hydroxy-2-methoxypyridine (CAS 1233025-58-5)
Recommended Standards
- 5-Fluoro-2-methoxypyridin-4-ol (CAS 51173-14-9)
- 5-Fluoro-3-methoxypyrazin-2-amine (CAS 942137-50-0)
- 5-Fluoro-2-hydrazino-4-pyrimidinamine (CAS 925192-06-9)
- 5-Fluoro-4-methoxy-2-pyrimidinamine (CAS 1993-74-4)
- N-Methyl-1-(2-methylimidazo[1,2-a]pyridin-3-yl)methanamine sulfate (CAS 1609395-73-4)
- Tetraethylammonium hydrogencarbonate (CAS 17351-61-0)
- N'-(Furan-2-ylmethylene)-2-(4-nitrophenoxy)acetohydrazide (CAS 303064-69-9)
- 2-Oxo-5-(propan-2-yl)cyclohexane-1-carbaldehyde (CAS 847998-40-7)
- (5-Chloro-2-hydroxyphenyl)thiourea (CAS 89793-06-6)
- 4-Chloro-6β,17β-dihydroxy-17α-methyl-1,4-androstadien-3-one (CAS 25486-01-5)
- 2-Chloro-5-cyclopropyl-7-methoxyquinazolin-4(3H)-one (CAS 601514-53-8)
- Ethyl 5-(Hydroxymethyl)isoxazole-3-carboxylate (CAS 123770-62-7)
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- a2,3-Sialylglycopeptide (CAS 189035-43-6)
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