2-Bromo-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one CAS 169192-93-2
| CAS No. | 169192-93-2 |
| Molecular Formula | C11H11BrO |
| Molecular Weight | 239.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-Bromo-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one 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.
2-Bromo-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one (CAS 169192-93-2), molecular formula C11H11BrO and molecular weight 239.11 g/mol, is a CATO reference standard with documented purity and traceability.
2-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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.) | 2005 |
| Halogen Content | Br-containing |
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Recommended Standards
- 6-Bromo-2-isopropyl-2H-indazole (CAS 1683546-11-3)
- 6-BROMO-1-ETHYL-4-METHYL-1H-INDAZOLE (CAS 1693763-40-4)
- 6-Bromo-2,2-dimethyl-2,3-dihydro-1H-inden-1-one (CAS 165730-10-9)
- 3-Bromo-1-ethyl-5-methyl-1H-indazole (CAS 1781364-26-8)
- (2S,4R)-1-(tert-Butoxycarbonyl)-4-cyanopyrrolidine-2-carboxylic acid (CAS 273221-94-6)
- 5-(4-Fluorophenyl)oxazole (CAS 128101-19-9)
- 2-chloro-3-ethoxycyclohex-2-en-1-one (CAS 87823-75-4)
- 1806744-83-1 3-Hydroxy-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-6-carboxaldehyde (CAS 1806744-83-1)
- Anastrozole EP Impurity H (CAS 120511-72-0)
- 4-amino-5-methylthieno[2,3-d]pyrimidine-6-carboxylic acid (CAS 958785-70-1)
- tert-Butyl (R)-2-(4-aminophenyl)morpholine-4-carboxylate (CAS 1260220-42-5)
- 2-(ETHYLTHIO)-5,7-DIHYDROTHIENO[3,4-D]PYRIMIDIN-4(3H)-ONE (CAS 5719-20-0)
- Fluorouracil Impurity 28 (CAS CATO-C4X-164928)
- Endo-38a-Pro-Exenatide trifluoroacetate salt (CAS 1678416-95-9)
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