3,6-difluoro-2-nitrophenol CAS 139548-97-3
| CAS No. | 139548-97-3 |
| Molecular Formula | C6H9F2NO3 |
| Molecular Weight | 181.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3,6-difluoro-2-nitrophenol (CAS 139548-97-3), molecular formula C6H9F2NO3 and molecular weight 181.14 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C6H9F2NO3, 3,6-difluoro-2-nitrophenol contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 181.14 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C6H9F2NO3 |
| Molecular Weight | 181.14 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, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- 4,4',4'',4'''-(1,3,6,8-Pyrenetetrayltetra-2,1-ethynediyl)tetrakis benzoic acid (CAS 1569900-71-5)
- [4-(2-Thienyl)phenyl]acetonitrile (CAS 209592-55-2)
- N-(2-(ethylamino)ethyl)-2,4-dihydroxyquinoline-3-carboxamide (CAS 378199-95-2)
- 3-Bromopyrazolo[1,5-c]pyrimidine-5-carboxylic acid (CAS 2383351-78-6)
- Semaglutide Impurity 4 (CAS CATO-C4X-22264)
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