4-Amino-2,3,5,6-tetrafluorophenol CAS 938-63-6
| CAS No. | 938-63-6 |
| Molecular Formula | C6H3F4NO |
| Molecular Weight | 181.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Amino-2,3,5,6-tetrafluorophenol 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-Amino-2,3,5,6-tetrafluorophenol (CAS 938-63-6) is a high-purity analytical reference standard with the molecular formula C6H3F4NO and a molecular weight of 181.09 g/mol.
Structurally, 4-Amino-2,3,5,6-tetrafluorophenol (C6H3F4NO) contains an amide group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. 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 181.09 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C6H3F4NO |
| Molecular Weight | 181.09 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
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- tert-Butyl 3-acetoxyazetidine-1-carboxylate (CAS 1215205-53-0)
- 3-Bromo-5-aminomethyl-4,5-dihydroisoxazole (CAS 115328-81-9)
- 7-Fluorobenzo[d]isothiazol-6-amine (CAS 2883479-76-1)
- (2R,3R,4R,5R)-2-(4-Chloro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)-3-methyltetrahydrofuran-3,4-diol (CAS 443642-33-9)
- Insulin Degludec Impurity 14 (CAS CATO-C4X-215714)
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