2,7-Bis(bromomethyl)-9,9-dihexyl-9H-fluorene CAS 187148-75-0
| CAS No. | 187148-75-0 |
| Molecular Formula | C27H36Br2 |
| Molecular Weight | 520.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,7-Bis(bromomethyl)-9,9-dihexyl-9H-fluorene (CAS 187148-75-0), molecular formula C27H36Br2 and molecular weight 520.38 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,7-Bis(bromomethyl)-9,9-dihexyl-9H-fluorene (C27H36Br2) contains bromine substitution, a polycyclic aromatic 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 520.38 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.
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 | C27H36Br2 |
| Molecular Weight | 520.38 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2010 |
| Halogen Content | Br-containing |
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- 3-(4-Amino-1H-pyrazol-1-yl)pyrrolidin-2-one (CAS 2137575-03-0)
- Glucagon-like peptide 2 (CAS 89750-15-2)
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