2-Bromobenzenesulfonic acid CAS 576-92-1
| CAS No. | 576-92-1 |
| Molecular Formula | C6H5BrO3S |
| Molecular Weight | 237.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Bromobenzenesulfonic acid (C6H5BrO3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. It is notably hygroscopic, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
2-Bromobenzenesulfonic acid (CAS 576-92-1), molecular formula C6H5BrO3S and molecular weight 237.07 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H5BrO3S |
| Molecular Weight | 237.07 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, water |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromobenzenesulfonic Standards
Recommended Standards
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- 2-(4-Bromothiophen-2-yl)-2-hydroxyacetic acid (CAS 67027-94-5)
- 1-(5-Bromothiophen-2-yl)-2,2-dihydroxyethan-1-one (CAS 852619-28-4)
- 3-(((4-Chlorobenzyl)thio)methyl)-5-((4-methylbenzyl)thio)-4-phenyl-4H-1,2,4-triazole (CAS 344269-47-2)
- 3-(2-Aminoethyl)-2-hydroxybenzoic acid (CAS 910389-93-4)
- ((1-(Bromomethyl)cyclohexyl)oxy)cycloheptane (CAS 1342144-96-0)
- Carbocisteine Impurity 13 (CAS 21301-10-0)
- 3-(4-Methoxyphenyl)-5-nitro-4,5-dihydroisoxazole (CAS 61428-15-7)
- 1-(2,6-Dimethylphenyl)-N,5-dimethyl-N-phenyl-1H-1,2,3-triazole-4-carboxamide (CAS 924833-33-0)
- 1,2,3,4-tetrahydronaphthalene-1-carboximidamide hydrochloride (CAS 1375996-89-6)
- 2-(2-Azabicyclo[2.2.1]Hept-5-en-2-yl)ethan-1-amine (CAS 933750-04-0)
- Benzo[c][1,2,5]oxadiazole-5-sulfonyl chloride (CAS 160232-20-2)
- Polymyxin B nonapeptide (CAS 86408-36-8)
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