2-Hydroxybenzenesulfonamide CAS 3724-14-9
| CAS No. | 3724-14-9 |
| Molecular Formula | C6H7NO3S |
| Molecular Weight | 173.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C6H7NO3S, 2-Hydroxybenzenesulfonamide contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 173.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
2-Hydroxybenzenesulfonamide (CAS 3724-14-9), molecular formula C6H7NO3S and molecular weight 173.19 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 | C6H7NO3S |
| Molecular Weight | 173.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Hydroxybenzenesulfonamide Standards
- 3-Hydroxybenzenesulfonamide (CAS 20759-40-4)
- 5-Ethyl-2-hydroxybenzenesulfonamide (CAS 1048919-68-1)
- 4-Ethyl-2-hydroxybenzenesulfonamide (CAS 1243390-60-4)
- 3-Ethyl-5-hydroxybenzenesulfonamide (CAS 1243407-66-0)
- 2-Ethyl-6-hydroxybenzenesulfonamide (CAS 1243425-19-5)
- 4-Ethyl-3-hydroxybenzenesulfonamide (CAS 1243453-55-5)
- 2-Ethyl-5-hydroxybenzenesulfonamide (CAS 1243458-38-9)
- 2-Ethyl-4-hydroxybenzenesulfonamide (CAS 1243471-59-1)
Recommended Standards
- 2-Hydroxy-2-(4-methylthiazol-5-yl)acetic acid (CAS 87764-53-2)
- 2-Methanesulfonylpyrimidin-5-amine (CAS 56621-92-2)
- 2-Fluoro-5-phenylpyridine (CAS 928822-80-4)
- 2-Methylpyridine-4-sulfonic acid (CAS 408533-46-0)
- (5-Bromo-4-methoxypyridin-2-yl)methanol (CAS 122307-33-9)
- (4-Methyl-2-morpholinyl)methanol (CAS 40987-46-0)
- Bicyclo[2.2.2]Octane-1,4-diyldimethanamine dihydrochloride (CAS 4308-62-7)
- (4-Phenyl-piperidin-1-yl)-acetic acid (4-phenylpiperidin-1-yl)acetic acid 4-phenyl-1-piperidineacetic acid 799266-57-2 (CAS 799266-57-2)
- rac Lysergic AcidDiscontinued (CAS 6915-32-8)
- 2-(4-((Benzyl(methyl)amino)methyl)piperidin-1-yl)ethanamine (CAS 1353984-76-5)
- 5-(4-Chloro-3-methylphenyl)-2H-tetrazole (CAS 885278-43-3)
- BPP 5a (CAS 30505-63-6)
- (3-Chloro-1-adamantyl)dimethylamine (CAS 1291486-03-7)
- Tirzepatide Impurity 43 (CAS CATO-C4X-324043)
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