9,9-Dihexyl-2,7-dibromofluorene CAS 189367-54-2
| CAS No. | 189367-54-2 |
| Molecular Formula | C25H32Br2 |
| Molecular Weight | 492.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 492.33 g/mol gives 9,9-Dihexyl-2,7-dibromofluorene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 9,9-Dihexyl-2,7-dibromofluorene (CAS 189367-54-2), a certified reference material (molecular formula C25H32Br2, MW 492.33 g/mol) for analytical method development and quality control.
Structurally, 9,9-Dihexyl-2,7-dibromofluorene (C25H32Br2) 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 492.33 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), 9,9-Dihexyl-2,7-dibromofluorene 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.
Physical & Chemical Properties
| Molecular Formula | C25H32Br2 |
| Molecular Weight | 492.33 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.) | 2011 |
| Halogen Content | Br-containing |
Related Dihexyl Standards
- 2,2'-(9,9-Dihexyl-9H-fluorene-2,7-diyl)bis(1,3,2-dioxaborinane) (CAS 250597-29-6)
- 3,3′′′-dihexyl-2,2′:5′,2′′:5′′,2′′′-tetrathiophene (CAS 132814-91-6)
- Benzyl 3',4-dihexyl-[2,2'-bithiophene]-5-carboxylate (CAS 833483-78-6)
- 2,5-Dihexyl-3,6-di(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione (CAS 852435-01-9)
- 2-(9,9-Dihexyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 264925-45-3)
- (9,9-Dihexyl-7-(trimethylsilyl)-9H-fluoren-2-yl)boronic acid (CAS 871468-23-4)
- (6-(9,9-Dihexyl-9H-fluoren-2-yl)pyridin-3-yl)methanol (CAS 921754-95-2)
- 5,11-Dihexyl-5,11-dihydroindolo[3,2-b]carbazole (CAS 924648-25-9)
Recommended Standards
- 1,2-Dibromo-4,5-bis(octyloxy)benzene (CAS 118132-04-0)
- 1,4-Dibromo-2,5-bis((2-ethylhexyl)oxy)benzene (CAS 191867-85-3)
- 1-([1,1'-Biphenyl]-4-ylmethyl)-4,6-difluoro-5-iodo-2-(methylthio)-1h-benzo[d]imidazole (CAS 1219741-32-8)
- 1,4-Dibromo-2,5-bis(octyloxy)benzene (CAS 56028-40-9)
- Trans-2-(2-bromopropan-2-yl)-5-isopropyltetrahydrofuran (CAS 89065-46-3)
- 4-[2-(4-Fluorophenoxy)ethoxy]phenylamine (CAS 879074-88-1)
- 2-(3-Methyl-5-(thiophen-2-yl)isoxazol-4-yl)acetic acid (CAS 1368422-59-6)
- Ibandronic Impurity 2 (CAS 625120-81-2)
- 1-(2-Methylphenyl)-5-propyl-1h-pyrazole-4-carboxylic acid (CAS 1002284-36-7)
- (2R)-2-Methyl-butanoic Acid Ethyl Ester (CAS 40917-00-8)
- 2-(1H-Indol-3-yl)propan-1-amine (CAS 4765-22-4)
- Di-Boc-2,6-diaminoheptanedioic Acid (Mixture of Isomers) (CAS 98469-29-5)
- 3-Heptylpyridine (CAS 103037-27-0)
- Semaglutide Impurity 11 (CAS CATO-C4X-222611)
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