1-(4-Bromophenyl)-2-(methylsulfonyl)ethan-1-one CAS 500576-33-0
| CAS No. | 500576-33-0 |
| Molecular Formula | C9H9BrO3S |
| Molecular Weight | 277.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-(4-Bromophenyl)-2-(methylsulfonyl)ethan-1-one (CAS 500576-33-0), molecular formula C9H9BrO3S and molecular weight 277.13 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-(4-Bromophenyl)-2-(methylsulfonyl)ethan-1-one (C9H9BrO3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 277.13 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), 1-(4-Bromophenyl)-2-(methylsulfonyl)ethan-1-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.
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.) | 1984 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromophenyl Standards
- 2-[(4-bromophenyl)methanesulfinyl]acetic acid (CAS 81431-33-6)
- N-(4-Bromophenyl)pyridine-2-carboxamide (CAS 14547-73-0)
- 2-(2-(4-Bromophenyl)-5-methyloxazol-4-yl)acetonitrile (CAS 328918-83-8)
- 2-(4-Bromophenyl)-6-oxo-1,4,5,6-tetrahydropyridine-3-carbonitrile (CAS 478081-43-5)
- N-(2-Bromophenyl)isonicotinamide (CAS 252930-61-3)
- N-(2-bromophenyl)picolinamide (CAS 401634-89-7)
- N-(3-bromophenyl)isonicotinamide (CAS 425685-43-4)
- n-(3-Bromophenyl)picolinamide (CAS 879767-00-7)
Recommended Standards
- 1-(2,4-Dichloro-5-methoxyphenyl)-1,2-dihydro-5H-tetrazole-5-thione (CAS 400085-60-1)
- 1-(benzenesulfonyl)-3-bromopropan-2-one (CAS 60156-13-0)
- (3-Bromo-2-butoxy-6-fluorophenyl)methanol (CAS 2379321-39-6)
- 1-Bromo-3-fluoro-2-isopropyl-5-(methoxymethoxy)benzene (CAS 2621936-42-1)
- (2-(P-tolyl)pyrimidin-4-yl)methanamine (CAS 1211514-47-4)
- 1-(5-Bromopyridin-3-yl)-propylamine (CAS 1194055-87-2)
- Methyl 4-methyl-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate (CAS 343864-83-5)
- 1-(4-((3-Methyl-1,2,4-oxadiazol-5-yl)methyl)thiazol-2-yl)-3-(thiophen-2-yl)urea (CAS 1797026-91-5)
- 5-Methyl-2-(2-methyl-1-piperidinyl)aniline (CAS 946761-58-6)
- N-Ethyl-4-(dimethylamino)benzylamine (CAS 313552-99-7)
- 6-Isopropoxy-2-(piperazin-1-yl)benzo[d]thiazole (CAS 401567-30-4)
- 1-(2-(Trifluoromethyl)phenyl)prop-2-yn-1-amine (CAS 1420791-57-6)
- (S)-N-methyl-1-(3-(trifluoromethyl)phenyl)ethan-1-amine (CAS 1212264-66-8)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
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