2-Bromo-9,9-diphenylfluorene CAS 474918-32-6
| CAS No. | 474918-32-6 |
| Molecular Formula | C25H17Br |
| Molecular Weight | 397.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Bromo-9,9-diphenylfluorene (C25H17Br) 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).
CATO supplies 2-Bromo-9,9-diphenylfluorene (CAS 474918-32-6), a certified reference material (molecular formula C25H17Br, MW 397.31 g/mol) for analytical method development and quality control.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C25H17Br |
| Molecular Weight | 397.31 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
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Recommended Standards
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- tert-Butyl 7-bromo-4,5-dihydro-3H-spiro[benzo[b][1,4]oxazepine-2,4'-piperidine]-1'-carboxylate (CAS 1956380-84-9)
- H-Gly-Gly-Arg-anilide (M-1450.0050) (CAS 390394-20-4)
- 2-Methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 691868-52-7)
- N-(4-Methyl-3-nitropyridin-2-yl)acetamide (CAS 150991-79-0)
- 1-(4,5-Dimethoxy-2-nitrophenyl)-2-phenylethan-1-ol (CAS 886493-45-4)
- 2-Ethyl-3-nitropyridine (CAS 1346534-62-0)
- Tert-butyl (1R,5R)-8-oxo-1,5,6,8-tetrahydro-2H-1,5-methanopyrido[1,2-a][1,5]diazocine-3(4H)-carboxylate (CAS 207390-62-3)
- 1-(2-Fluorophenyl)-3-methoxy-1H-pyrazole-5-carboxylic acid (CAS 1781899-13-5)
- (S)-2-(2-Amino-3-(furan-2-yl)propanamido)acetic acid (CAS 918957-67-2)
- 4-Ethyl-2-methyloxazole-5-carboxylic acid (CAS 1564709-36-9)
- His-Cyclic-Semaglutide (CAS CATO-C4X-2226182)
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