5-bromonaphthalene-1-sulfonic acid CAS 162109-23-1
| CAS No. | 162109-23-1 |
| Molecular Formula | C10H7BrO3S |
| Molecular Weight | 287.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 287.13 g/mol gives 5-bromonaphthalene-1-sulfonic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-bromonaphthalene-1-sulfonic acid (CAS 162109-23-1), a certified reference material (molecular formula C10H7BrO3S, MW 287.13 g/mol) for analytical method development and quality control.
The molecular framework of 5-bromonaphthalene-1-sulfonic acid (C10H7BrO3S) 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 its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 5-bromonaphthalene-1-sulfonic acid 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 | C10H7BrO3S |
| Molecular Weight | 287.13 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2003 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related bromonaphthalene Standards
- 6-Bromonaphthalene-2-sulfonic acid (CAS 57189-62-5)
- 8-Bromonaphthalene-1-sulfonic acid (CAS 63970-02-5)
- 1-bromonaphthalene-2-sulfonamide (CAS 691359-88-3)
- 4-Bromonaphthalene-1-sulfonamide (CAS 90766-48-6)
- ethyl 6-bromonaphthalene-2-carboxylate (CAS 86471-14-9)
- 6-Bromonaphthalene-2-carboxylic acid methoxymethylamide (CAS 861880-64-0)
- 2-bromonaphthalene-1,4-dicarboxylic acid (CAS CATO-C4X-26287)
- 5-bromonaphthalene-1,4-dicarboxylic acid (CAS CATO-C4X-26288)
Recommended Standards
- 4-Bromo-1-naphthalenesulfonic acid (CAS 162109-20-8)
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- 5-Bromo-1-tert-butyl-6-fluoro-3H-1,3-benzodiazol-2-one (CAS 1403483-67-9)
- 1,2-Bis(2-chloro-4-fluorophenyl)ethane (CAS 1864016-10-3)
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- Methyl 2-(3,5-diphenyl-1H-1,2,4-triazol-1-yl)acetate (CAS 1171932-97-0)
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Why CATO?
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