4-Fluoro-n-(isoxazol-3-yl)benzenesulfonamide CAS 900415-51-2
| CAS No. | 900415-51-2 |
| Molecular Formula | C9H7FN2O3S |
| Molecular Weight | 242.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Fluoro-n-(isoxazol-3-yl)benzenesulfonamide 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-Fluoro-n-(isoxazol-3-yl)benzenesulfonamide (CAS 900415-51-2), molecular formula C9H7FN2O3S and molecular weight 242.23 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution, 4-Fluoro-n-(isoxazol-3-yl)benzenesulfonamide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 242.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H7FN2O3S |
| Molecular Weight | 242.23 g/mol |
| 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 |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Fluoro Standards
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- 2-(5-Fluoro-1h-1,3-benzodiazol-2-yl)-6-methylphenol (CAS 1184714-92-8)
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- 3-((2-Fluoro-4-nitrophenyl)amino)-2-methylbutan-2-ol (CAS 1241287-31-9)
- 6-Fluoro-3-phenylchroman-4-one (CAS 1370604-93-5)
Recommended Standards
- 4-Methyl-2-(3-nitrobenzoyl)pyridine (CAS 382628-82-2)
- 4-Amino-3-Nitro Benzophenone (CAS 31431-19-3)
- 4-Nitrobenzanilide (CAS 3460-11-5)
- 4-amino-3-methyl-pyrazolo[3,4-c]quinoline-8-carboxylic acid (CAS 2774613-70-4)
- 4-Chloro-1-(thiophen-2-yl)butan-1-one (CAS 43076-59-1)
- 2-Bromo-3,5-dichloro-4-fluoroaniline (CAS 1092350-32-7)
- 2,3-Diphenylquinoxalin-6-ol (CAS 60729-21-7)
- dimethyl 1,3-dimethylcyclopentane-1,3-dicarboxylate (CAS 546101-12-6)
- ([15N]Gly)-Glutathione (reduced) (H-4584.0025) (CAS 320374-87-6)
- rac N-tert-Butoxycarbonyl Viloxazine (CAS 1330189-29-1)
- 1-(thiophen-2-ylmethyl)-1h-pyrazol-4-boronic acid pinacol ester 1-(thiophen-2-ylmethyl)-1h-pyrazole-4-boronic acid, pinacol ester 1-(thiophen-2-ylmethyl)pyrazole-4-boronic acid, pinacol ester 1-[(2-thienyl)methyl]-1h-pyrazole-4-boronic acid pinacol ester, 97% 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(2-thienylmethyl)-1H-pyrazole 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(thiophen-2-ylmethyl)-1h-pyraz 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-thiophen-2-ylmethyl-1h-pyrazole 864754-19-8 (CAS 864754-19-8)
- N-Desmethyl Tramadol (CAS 75377-45-6)
- 5-Bromo-4-chloro-3-methoxy-2-methylpyridine (CAS 71001-58-6)
- Acetyl Tripeptide-1 (CAS 350595-76-5)
Why CATO?
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