3-(Bromomethyl)-2,4-dichlorobenzene-1-sulfonyl chloride CAS 188440-21-3
| CAS No. | 188440-21-3 |
| Molecular Formula | C7H4BrCl3O2S |
| Molecular Weight | 338.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-(Bromomethyl)-2,4-dichlorobenzene-1-sulfonyl 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.
3-(Bromomethyl)-2,4-dichlorobenzene-1-sulfonyl chloride (CAS 188440-21-3), molecular formula C7H4BrCl3O2S and molecular weight 338.43 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-(Bromomethyl)-2,4-dichlorobenzene-1-sulfonyl chloride (C7H4BrCl3O2S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/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).
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 | C7H4BrCl3O2S |
| Molecular Weight | 338.43 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| 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.) | 2010 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 1 |
Related Bromomethyl Standards
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Recommended Standards
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- 2-[3-(2,5-Dimethyl-1H-pyrrol-1-yl)thiophen-2-yl]-5,6-dimethylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 478077-97-3)
- 3-Bromo-4,6-dichloro-2-(difluoromethyl)pyridine (CAS 1805996-86-4)
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- Methyl 6-methyl-2-oxo-3-(3-(trifluoromethyl)benzamido)-2H-pyran-5-carboxylate (CAS 338418-34-1)
- 5-(2,6-Dichlorophenyl)-1,3-oxazole-4-carboxylic acid (CAS 1248310-70-4)
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