9,9-Bis(2-ethylhexyl)-2,7-diiodo-9H-fluorene CAS 278176-08-2
| CAS No. | 278176-08-2 |
| Molecular Formula | C29H40I2 |
| Molecular Weight | 642.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 642.44 g/mol gives 9,9-Bis(2-ethylhexyl)-2,7-diiodo-9H-fluorene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
9,9-Bis(2-ethylhexyl)-2,7-diiodo-9H-fluorene (CAS 278176-08-2), molecular formula C29H40I2 and molecular weight 642.44 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 9,9-Bis(2-ethylhexyl)-2,7-diiodo-9H-fluorene (C29H40I2) is characterized by iodine 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. 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 | C29H40I2 |
| Molecular Weight | 642.44 g/mol |
| 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.) | 2025 |
| Halogen Content | I-containing |
Related Bis Standards
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Recommended Standards
- 2,7-Diiodo-9,9-dioctyl-9H-fluorene (CAS 278176-06-0)
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- 6,6'-Dibromo-9,9'-diphenyl-3,3'-bicarbazole (CAS 354135-75-4)
- CAS CATO-C3D-262837 (CAS CATO-C3D-262837)
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