5,9-Dibromo-7H-benzo[c]fluoren-7-one CAS 1637660-36-6
| CAS No. | 1637660-36-6 |
| Molecular Formula | C17H8Br2O |
| Molecular Weight | 388.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,9-Dibromo-7H-benzo[c]fluoren-7-one (C17H8Br2O) contains a steroid core, a hydroxyl group, an ether linkage, bromine substitution. 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. 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).
CATO supplies 5,9-Dibromo-7H-benzo[c]fluoren-7-one (CAS 1637660-36-6), a certified reference material (molecular formula C17H8Br2O, MW 388.05 g/mol) for analytical method development and quality control.
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.
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 | C17H8Br2O |
| Molecular Weight | 388.05 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, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 3,9-Dibromo-7H-benzo[de]anthracen-7-one (CAS 81-98-1)
- 6,11-dibromo-1,4-diazatriphenylene (CAS 1012836-59-7)
- 3,5-Dibromo-4-((2-fluorobenzyl)oxy)benzaldehyde (CAS 792945-87-0)
- 3,5-Dibromo-4-[(4-fluorobenzyl)oxy]benzaldehyde (CAS 352455-49-3)
- 4-(6,8-Dibromo-2-methylimidazo[1,2-a]pyridin-3-yl)thiazol-2-amine (CAS 886507-34-2)
- 3-(4,5-Dibromo-6-oxopyridazin-1(6H)-yl)-4-methylbenzoic acid (CAS 830326-26-6)
- 2',5'-Dibromo-1,1':4',1''-terphenyl (CAS 1293386-03-4)
- 4,4’’-Dibromo-p-terphenyl (CAS 17788-94-2)
Recommended Standards
- Bis(2,4-dichloro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)methane (CAS 90213-77-7)
- tert-Butyl (4,5-dichloro-2-iodophenyl)carbamate (CAS 835595-19-2)
- Perfluoroheptane (CAS 335-57-9)
- Tetrachloro Biphenol S (CAS 30609-79-1)
- N-(4-(1H-Tetrazol-1-yl)phenyl)-2-(3,5-dimethyl-1H-pyrazol-1-yl)acetamide (CAS 1207029-98-8)
- Methyl 3-amino-3-(2-methylphenyl)propanoate hydrochloride (CAS 1258651-74-9)
- Deoxydonepezil Hydrochloride (CAS 1034439-57-0)
- 2-[2-(4-Methyl-2-nitrophenoxy)ethyl]piperidinehydrochloride (CAS 1219982-41-8)
- 5-Chloro-3,4-dimethyl-1-phenylpyrano[2,3-c]pyrazol-6(1H)-one (CAS 85094-37-7)
- 3-((tert-Butoxycarbonyl)amino)-3-(tetrahydro-2H-thiopyran-4-yl)propanoic acid (CAS 898404-99-4)
- 1-(2-Amino-3-chlorophenyl)-2-phenylethan-1-one (CAS 90033-65-1)
- Ethyl 3-((4-iodo-1h-pyrazol-1-yl)methyl)-1,2,4-oxadiazole-5-carboxylate (CAS 956263-70-0)
- 3-(7-Methyl-3-indolyl)-1-propanamine (CAS 34572-17-3)
- [Glu]17-Liraglutide (CAS CATO-C4X-199236)
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