(4-Bromo-2-methylphenyl)methanesulfonyl chloride CAS 1541775-33-0
| CAS No. | 1541775-33-0 |
| Molecular Formula | C8H8BrClO2S |
| Molecular Weight | 283.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (4-Bromo-2-methylphenyl)methanesulfonyl chloride 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.
(4-Bromo-2-methylphenyl)methanesulfonyl chloride (CAS 1541775-33-0), molecular formula C8H8BrClO2S and molecular weight 283.57 g/mol, is a CATO reference standard with documented purity and traceability.
(4-Bromo-2-methylphenyl)methanesulfonyl chloride (C8H8BrClO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H8BrClO2S |
| Molecular Weight | 283.57 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
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- 3-Bromo-4,5-dimethylbenzene-1-sulfonyl chloride (CAS 1251925-22-0)
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Recommended Standards
- (4-Bromo-3-methylphenyl)methanesulfonyl chloride (CAS 1531565-86-2)
- 4-Bromo-3,5-dimethylbenzene-1-sulfonyl chloride (CAS 1581266-79-6)
- 4-Bromo-2-ethylbenzenesulfonyl chloride (CAS 175278-24-7)
- 1-(Bromomethyl)-2-chloro-4-(methylsulfonyl)benzene (CAS 180200-86-6)
- 5-Fluoro-1(3h)-isobenzofuranone (CAS 700-85-6)
- 4-Methoxy-5-nitropyrimidine (CAS 15579-58-5)
- 2-[(5-ethyl-1,3-oxazol-2-yl)methyl]-2,3-dihydro-1H-isoindole-1,3-dione (CAS 1461713-81-4)
- 2,4-Diamino-6-methylpyrimidin-5-ol hydrochloride (CAS 651359-62-5)
- 2-((7-(4-(Di-p-tolylamino)phenyl)benzo[c][1,2,5]thiadiazol-4-yl)methylene)malononitrile (CAS 1393343-58-2)
- 3-Amino-1,5-dimethyl-1H-1,2,4-triazole (CAS 34776-19-7)
- N-(tert-butyl)-2-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)acetamide (CAS 2056919-55-0)
- Methyl 2-bromo-3-(4-methylphenyl)propanoate (CAS 7141-88-0)
- 3-Fluoro-4-(methylthio)phenol (CAS 13333-79-4)
- Peptide Fmoc-Thi-Thi-OH (CAS CATO-CPTD788552)
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