9,9-Dibromo-9H-fluorene CAS 15300-75-1
| CAS No. | 15300-75-1 |
| Molecular Formula | C13H8Br2 |
| Molecular Weight | 324.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 9,9-Dibromo-9H-fluorene 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.
9,9-Dibromo-9H-fluorene (CAS 15300-75-1) is a high-purity analytical reference standard with the molecular formula C13H8Br2 and a molecular weight of 324.01 g/mol.
Structurally, 9,9-Dibromo-9H-fluorene (C13H8Br2) contains bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 324.01 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C13H8Br2 |
| Molecular Weight | 324.01 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 1,4-dibromo-2,5-diethoxybenzene (CAS 101907-55-5)
- 1,4-Dibromo-2,5-bis(methoxymethyl)benzene (CAS 144526-35-2)
- (3,5-Dibromo-4-propoxyphenyl)methanol (CAS 1692704-74-7)
- [3,5-Dibromo-4-(propan-2-yloxy)phenyl]methanol (CAS 1696709-12-2)
- 2,6-Dibromo-9H-fluorene (CAS 858800-80-3)
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- 3-(3,5-Dibromo-4-hydroxyphenyl)propanoic acid (CAS 13811-12-6)
Recommended Standards
- 2,7-Dibromofluorene (CAS 16433-88-8)
- 2'-(Chloromethyl)-5'-fluoro-2,3,5-trichlorobiphenyl (CAS 1361718-40-2)
- 2-(2,4,5-Trichlorophenoxy)ethane-1-sulfonyl chloride (CAS 1341929-84-7)
- 1,4-bis(2-bromoethoxy)benzene (CAS 5471-84-1)
- [1,1'-Biphenyl]-2,3'-dicarboxylic acid (CAS 606-75-7)
- 2-Bromo-9-methyl-9H-pyrrolo[2,3-b:4,5-c']dipyridine (CAS 1802412-74-3)
- (2-Chloro-5,8-dimethylquinolin-3-yl)methanamine (CAS 1707584-36-8)
- trans-2-[2-(4-Bromophenyl)-2-oxoethyl]cyclohexane-1-carboxylic acid (CAS 735274-88-1)
- tert-Butyl (4-hydroxy-3-nitrophenyl)carbamate (CAS 197442-80-1)
- 5,5'-Di([1,1'-biphenyl]-4-yl)-2,2'-bithiophene (CAS 175850-28-9)
- N-ethyl-N-(tosylmethyl)aniline (CAS 101287-20-1)
- Flupentixol EP Impurity E (E and Z mixture) Oxalate (CAS CATO-C4X-189533)
- Flomoxef Impurity 41 (CAS CATO-C4X-138241)
- Des-Leu14-Tirzepatide (CAS CATO-CPTD788959)
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