2-Bromo-1-[2-(methylsulfonyl)phenyl]ethanone CAS 99513-18-5
| CAS No. | 99513-18-5 |
| Molecular Formula | C9H9BrO3S |
| Molecular Weight | 277.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 2-Bromo-1-[2-(methylsulfonyl)phenyl]ethanone (C9H9BrO3S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
2-Bromo-1-[2-(methylsulfonyl)phenyl]ethanone (CAS 99513-18-5), molecular formula C9H9BrO3S and molecular weight 277.13 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-Bromo-1-[2-(methylsulfonyl)phenyl]ethanone 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 | C9H9BrO3S |
| Molecular Weight | 277.13 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 4-Bromo-N-ethyl-2,5-dimethoxyphenethylamine (CAS 155639-24-0)
- 5,5'-Diisopropyl-3,3'-dimethyl-1,1',4,4'-tetraoxo-1,1',4,4'-tetrahydro-[2,2'-binaphthalene]-6,6',7,7'-tetrayl tetraacetate (CAS 886435-01-4)
- Propyl 4-(ethylamino)benzoate (CAS 1094306-89-4)
- 6-((3,7,9-Trimethyldeca-2,6-dien-1-yl)oxy)-2,3-dihydrobenzofuran (CAS 51079-41-5)
- 4-HYDROXYPENBUTOLOL (CAS 81542-82-7)
- Ferulic Acid 4-O-Sulfate (CAS 86321-29-1)
- 4-(2,4-Dioxo-3-azabicyclo[3.1.0]hexan-3-yl)-2-(methylamino)butanoic acid (CAS 1340154-31-5)
- N-Methyl-N-(quinolin-6-ylmethyl)amine (CAS 179873-36-0)
- Ethyl 5,5,5-trifluoro-4-hydroxypentanoate (CAS 70961-06-7)
- Compstatin control peptide (CAS 301544-78-5)
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