2,3,4,5-Tetraphenyloxazol-3-ium tetrafluoroborate CAS 81640-35-9
| CAS No. | 81640-35-9 |
| Molecular Formula | C27H20NO |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2,3,4,5-Tetraphenyloxazol-3-ium tetrafluoroborate is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 2,3,4,5-Tetraphenyloxazol-3-ium tetrafluoroborate (CAS 81640-35-9), a certified reference material (molecular formula C27H20NOBF4, MW 461.26 g/mol) for analytical method development and quality control.
2,3,4,5-Tetraphenyloxazol-3-ium tetrafluoroborate (C27H20NOBF4) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C27H20NO BF4 |
| Molecular Weight | 461.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- (6-((Cyclohexylmethyl)amino)pyridin-3-yl)boronic acid (CAS 1246743-82-7)
- N-(4-Fluorophenyl)piperidine-1-sulfonamide (CAS 446052-57-9)
- N-Octatriacontane (CAS 7194-85-6)
- 2-(4-(Aminomethyl)-1H-1,2,3-triazol-1-yl)-N-butylacetamide (CAS 1247914-74-4)
- 1-Bromo-4-butylbenzene (CAS 41492-05-1)
- Diethyl (2S,3S)-2,3-diphenylsuccinate (CAS 24097-93-6)
- 2-Aminobenzo[d]thiazole-6-carbonyl chloride (CAS 743384-25-0)
- Dofenapyn (CAS 42873-80-3)
- 8-Fluoroquinoline-2,4-diol (CAS 1823734-31-1)
- Semaglutide impurity 65 (CAS CATO-C4X-222665)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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