4-Fluoropyridine N-oxide CAS 124666-05-3
| CAS No. | 124666-05-3 |
| Molecular Formula | C5H4FNO |
| Molecular Weight | 113.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Fluoropyridine N-oxide is closely related to an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-Fluoropyridine N-oxide (CAS 124666-05-3), molecular formula C5H4FNO and molecular weight 113.09 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Fluoropyridine N-oxide (C5H4FNO) contains an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 113.09 g/mol, it falls into the low-molecular-weight range. 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 | C5H4FNO |
| Molecular Weight | 113.09 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Fluoropyridine Standards
- 3-Fluoropyridine 1-oxide (CAS 695-37-4)
- 4-Fluoropyridine-3-carbonitrile (CAS 1060802-53-0)
- 4-Fluoropyridine-2-carbonitrile (CAS 847225-56-3)
- 5-fluoropyridine-3-carbonitrile (CAS 696-42-4)
- 6-fluoropyridine-3-carbonitrile (CAS 3939-12-6)
- 4-Fluoropyridine-2-carboxaldehyde (CAS 1060809-18-8)
- 4-Fluoropyridine-3-carbaldehyde (CAS 884495-32-3)
- 5-Fluoropyridine-2-carboxaldehyde (CAS 31181-88-1)
Recommended Standards
- 6-Fluoropyrazin-2-amine (CAS 1246466-74-9)
- furan-2-(²H)carboxylic acid (CAS 138720-19-1)
- 3-Fluoropyrazin-2-amine (CAS 1206523-95-6)
- 3-Fluoro-2-hydroxypyridine (CAS 1547-29-1)
- 3-(2,4-Dioxo-1,4-dihydroquinazolin-3(2H)-yl)-N-methyl-N-(2-(pyridin-2-yl)ethyl)propanamide (CAS 896366-52-2)
- 3,3,4,4,5,5-Hexafluoropiperidine (CAS 2145-59-7)
- (4aR,7aR)-tert-Butyl hexahydropyrrolo[3,4-b][1,4]oxazine-6(2H)-carboxylate (CAS 1383428-22-5)
- 3-(3-Ethyl-1,2,4-oxadiazol-5-yl)piperidine (CAS 139269-06-0)
- 2-(Di(naphthalen-1-yl)boryl)ethanamine (CAS 61733-89-9)
- 4-Methoxy-2-propoxyaniline (CAS 1342350-56-4)
- Methyl 4-(6-methyl-4-(trifluoromethyl)pyridin-2-yl)benzoate (CAS 1311278-62-2)
- Ethyl 2,3-dibromo-6-fluorobenzoate (CAS 1805122-86-4)
- 2-(4-(3-Chlorophenyl)piperazin-1-yl)-N-(4-fluorophenyl)acetamide (CAS 303091-53-4)
- Proinsulin C-Peptide (55-89) (human) (CAS 11097-48-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com