2,3-Dibromo-1,4-diphenylnaphthalene CAS 127257-79-8
| CAS No. | 127257-79-8 |
| Molecular Formula | C22H14Br2 |
| Molecular Weight | 438.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2,3-Dibromo-1,4-diphenylnaphthalene (CAS 127257-79-8), molecular formula C22H14Br2 and molecular weight 438.15 g/mol, is a CATO reference standard with documented purity and traceability.
2,3-Dibromo-1,4-diphenylnaphthalene (C22H14Br2) contains bromine substitution, a polycyclic aromatic system. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C22H14Br2 |
| Molecular Weight | 438.15 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 3,7-Dibromo-1,5-diphenylnaphthalene (CAS 872610-33-8)
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Recommended Standards
- 6-Chloro-2-(4-chlorophenyl)-1-((2,4-dichlorobenzyl)oxy)-1H-benzo[d]imidazole (CAS 338978-93-1)
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- tert-Butyl 4-bromo-1-oxo-6-(tetramethyl-1,3,2-dioxaborolan-2-yl)-3H-isoindole-2-carboxylate (CAS 2377610-56-3)
- Dimethyl 2,2'-(adamantane-1,3-diyl)bis(2-bromoacetate) (CAS 202534-05-2)
- 6-Chloro-N1-methyl-N1-((tetrahydro-2H-pyran-4-yl)methyl)benzene-1,2-diamine (CAS 1220021-22-6)
- 2-(2,4-Dioxothiazolidin-3-yl)acetonitrile (CAS 1351566-23-8)
- rel-(1R,2S,4S)-1-Isopropyl-4-methyl-2-(vinyloxy)cyclohexane (CAS 5989-48-0)
- 2-Chloro-5-fluoro-4-nitropyridine (CAS 1784429-31-7)
- 3’,5’-Bis(trifluoromethyl)-2-hydroxyacetophenone (CAS 944277-15-0)
- N-(5-Amino-2-methylphenyl)-3-(2-ethoxyethoxy)-benzamide (CAS 1020054-90-3)
- 3-Bromo-5-(2,2,2-trifluoroethyl)benzoic acid (CAS 1965305-09-2)
- 2-Amino-6-methylnicotinamide (CAS 100524-09-2)
- N-(3-Hydroxypropyl)-5-methyl-1-(4-(3-(trifluoromethyl)phenyl)thiazol-2-yl)-1H-pyrazole-4-carboxamide (CAS 162112-37-0)
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