3-Bromo-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one CAS 87779-78-0
| CAS No. | 87779-78-0 |
| Molecular Formula | C11H11BrO |
| Molecular Weight | 239.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-Bromo-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
3-Bromo-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one (CAS 87779-78-0), molecular formula C11H11BrO and molecular weight 239.11 g/mol, is a CATO reference standard with documented purity and traceability.
3-Bromo-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one (C11H11BrO) contains a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. 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 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 | C11H11BrO |
| Molecular Weight | 239.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Br-containing |
Related Bromo Standards
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Recommended Standards
- 3-(4-Bromophenyl)cyclopentanone (CAS 909248-46-0)
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- 4-(3-Bromophenyl)-2-methylbut-3-yn-2-ol (CAS 76347-61-0)
- Methyl 1-(2-(dimethylamino)-2-oxoethyl)-3-nitro-1H-pyrazole-5-carboxylate (CAS 1245823-34-0)
- Methyl 3-Oxo-3-[3-(trifluoromethoxy)phenyl]propionate (CAS 1181574-09-3)
- (1s,3s)-3-(methylsulfanyl)cyclobutan-1-ol (CAS 2059911-31-6)
- 1-(4-Chlorobenzyl)-1H-benzimidazole-2-thiol (CAS 100622-93-3)
- Teoc-L-Ile-Gly-OH (CAS 2459946-38-2)
- Methyl 5-(2-amino-4-chlorophenyl)furan-2-carboxylate (CAS 886494-66-2)
- Imidazo[1,2-a]pyrazin-5(1H)-one (CAS 270902-47-1)
- 4-Methoxy-3-phenethoxybenzaldehyde (CAS 149428-73-9)
- 4-(Diethylamino)-2-methylquinoline-5,8-diol (CAS 88484-75-7)
- Liraglutide Impurity 25 (CAS CATO-C4X-199225)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com