2,7-Dibromo-9,9-diphenylfluorene CAS 186259-63-2
| CAS No. | 186259-63-2 |
| Molecular Formula | C25H16Br2 |
| Molecular Weight | 476.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2,7-Dibromo-9,9-diphenylfluorene 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.
CATO supplies 2,7-Dibromo-9,9-diphenylfluorene (CAS 186259-63-2), a certified reference material (molecular formula C25H16Br2, MW 476.20 g/mol) for analytical method development and quality control.
2,7-Dibromo-9,9-diphenylfluorene (C25H16Br2) 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. 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.
Physical & Chemical Properties
| Molecular Formula | C25H16Br2 |
| Molecular Weight | 476.20 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2010 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 4',5'-Dibromo-[1,1':2',1''-terphenyl]-4,4''-dicarboxylicacid (CAS 1670924-30-7)
- (Z)-4-((Dibromo(((E)-4-oxopent-2-en-2-yl)oxy)stannyl)oxy)pent-3-en-2-one (CAS 16894-10-3)
- Ethyl 2,3-dibromo-3-(4-chloro-2-fluoro-5-(2-(methylamino)-2-oxoethoxy)phenyl)propanoate (CAS 2151826-94-5)
- 3,5-Dibromo-2,6-difluoro-N-(4-nitro-2-(trifluoromethyl)phenyl)pyridin-4-amine (CAS 37729-25-2)
- 3,6-Dibromo-9,9'-spirobi[fluorene] (CAS 1373114-50-1)
- 2,7-Dibromo-9,9’-spirobifluorene (CAS 171408-84-7)
- 2,2’-Dibromo-9,9’-spirobifluorene (CAS 67665-47-8)
- 6,13-Dibromo-9,10-dimethoxy-1,3,4,4a,5,13c-hexahydro-2H-indeno[2,1-d]fluorene (CAS 815610-55-0)
Recommended Standards
- BTF-2ThBr (CAS 1352921-50-6)
- 1,1-Bis(4-chlorophenyl)-2-(2,6-dichlorobenzenesulfonyl)ethan-1-ol (CAS 337919-96-7)
- 9,9-Bis(4-bromophenyl)-9H-fluorene (CAS 128406-10-0)
- 1,1-Bis(4-chlorophenyl)-2-(3,4-dichlorobenzenesulfonyl)ethan-1-ol (CAS 303152-13-8)
- Dimethyl bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylate (CAS 5826-73-3)
- Ethyl 3-bromo-5-cyano-2-methylbenzoate (CAS 1805248-92-3)
- 2-[(3-methylbut-2-en-1-yl)sulfanyl]benzoic acid (CAS 1019351-72-4)
- 4-Methyl-5-nitro-1H-pyrrolo[2,3-b]pyridine, 97% (CAS 1511867-22-3)
- Methyl 4-((5-methylisoxazol-3-yl)carbamoyl)benzoate (CAS 391876-99-6)
- 3-chloro-5H-pyrido[3,2-c]pyridazin-6-one (CAS 2677885-17-3)
- 5-Hydroxyisophthalate dimethyl ester (CAS 13036-02-7)
- 9-Phenyl-2,3-dihydro-[1,4]dioxino[2,3-g]quinolin-7-ol (CAS 303794-09-4)
- 2-(5-(Thiophene-3-carbonyl)thiophen-2-yl)acetic acid (CAS 1447964-79-5)
- Glucagon (1-29) (CAS 16941-32-5)
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