9-(3-Bromophenyl)-9-phenyl-9H-fluorene CAS 1257251-75-4
| CAS No. | 1257251-75-4 |
| Molecular Formula | C25H17Br |
| Molecular Weight | 397.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 9-(3-Bromophenyl)-9-phenyl-9H-fluorene is closely related to bromine substitution, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 9-(3-Bromophenyl)-9-phenyl-9H-fluorene (CAS 1257251-75-4), a certified reference material (molecular formula C25H17Br, MW 397.31 g/mol) for analytical method development and quality control.
The molecular framework of 9-(3-Bromophenyl)-9-phenyl-9H-fluorene (C25H17Br) is characterized by bromine substitution, a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | 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.) | 1990 |
| Halogen Content | Br-containing |
Related Bromophenyl Standards
- 10-(3-Bromophenyl)-14,14-dimethyl-2,9-diazatricyclo[9.4.0.0^{3,8}]pentadeca-1(11),3(8),4,6-tetraen-12-one (CAS 149774-60-7)
- 9-(2-Bromophenyl)-9-phenyl-9H-fluorene (CAS 1998216-26-4)
- 9-(4-Bromophenyl)-9-phenylfluorene (CAS 937082-81-0)
- 3-(1-(3-(4-Bromophenyl)propanoyl)pyrrolidin-3-yl)thiazolidine-2,4-dione (CAS 1795481-46-7)
- (Z)-3-(3-Bromophenyl)-2-(4-(4-methoxyphenyl)thiazol-2-yl)acrylonitrile (CAS 476670-29-8)
- 1-(2-Bromophenyl)-2-phenyl-5,6,7,8-tetrahydroquinazoline-4(1H)-thione (CAS 62721-94-2)
- 2-(2-Bromophenyl)-1-phenyl-5,6,7,8-tetrahydroquinazoline-4(1H)-thione (CAS 62721-95-3)
- 3-((4-Bromophenyl)sulfonyl)-1-(4-ethoxyphenyl)propan-1-one (CAS 477334-21-7)
Recommended Standards
- Diflufenican-d3 (3-trifluoromethylphenoxy-2,4,6-d3) (CAS 1185009-29-3)
- tert-Butyl (4-(4-bromobenzamido)cyclohexyl)carbamate (CAS 1286272-80-7)
- 1-methyl-3-(trifluoromethyl)-5-{[3-(trifluoromethyl)phenyl]methanesulfonyl}-1H-pyrazole-4-carbonitrile 318469-14-6 5F-392S (CAS 318469-14-6)
- tert-Butyl (1R*,4R*)-4-(3-bromobenzamido)cyclohexylcarbamate (CAS 1286273-58-2)
- 5-[2-(1H-imidazol-4-yl)-1,3-thiazol-4-yl]-3-methyl-1,2,4-oxadiazole (CAS 1355236-40-6)
- 3-Phenyl-4-(phenylsulfonyl)-4,5-dihydro-3H-pyrazole (CAS 93733-24-5)
- β-Naphthoflavone (CAS 6051-87-2)
- 1-{7-methylpyrrolo[2,1-f][1,2,4]triazin-2-yl}methanamine (CAS 1367931-58-5)
- 3-Cyclopentyl-4-iodo-1-methyl-5-vinyl-1H-pyrazole (CAS 1956340-22-9)
- 4-[(Butylamino)methyl]-n,n-diethylaniline (CAS 5468-68-8)
- 2-Fluoro-3-nitropyridine hydrate (CAS 1881328-77-3)
- 5-isopropyl-2-(trifluoromethyl)thiophen-3-amine;hydrochloride (CAS 2567560-88-5)
- 4-(Piperazin-1-ylsulfonyl)benzo[c][1,2,5]thiadiazole (CAS 488122-76-5)
- Semaglutide Impurity 12 (CAS CATO-C4X-222612)
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