3-Hydroxy-2-(methylsulfonamido)benzenesulfonamide CAS 1243476-55-2
| CAS No. | 1243476-55-2 |
| Molecular Formula | C7H10N2O5S2 |
| Molecular Weight | 266.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-Hydroxy-2-(methylsulfonamido)benzenesulfonamide (CAS 1243476-55-2), molecular formula C7H10N2O5S2 and molecular weight 266.29 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-Hydroxy-2-(methylsulfonamido)benzenesulfonamide (C7H10N2O5S2) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 266.29 g/mol, it falls into the medium-molecular-weight range. 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).
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 | C7H10N2O5S2 |
| Molecular Weight | 266.29 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.) | 1990 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Hydroxy Standards
- 3-Hydroxy-4-(methylsulfonamido)benzenesulfonamide (CAS 1243368-70-8)
- 4-Hydroxy-3-(methylsulfonamido)benzenesulfonamide (CAS 1243410-34-5)
- 2-Hydroxy-5-(methylsulfonamido)benzenesulfonamide (CAS 1243458-99-2)
- 5-Hydroxy-2-(methylsulfonamido)benzenesulfonamide (CAS 1243474-38-5)
- 6-Ethyl-7-hydroxy-4-phenyl-2h-chromen-2-one (CAS 130182-00-2)
- (3R)-3-(4-hydroxy-1-oxo-isoindolin-2-yl)piperidine-2,6-dione (CAS 2414414-22-3)
- (3R)-3-(5-hydroxy-1-oxo-isoindolin-2-yl)piperidine-2,6-dione (CAS 2417258-71-8)
- (3S)-3-(4-hydroxy-1-oxo-isoindolin-2-yl)piperidine-2,6-dione (CAS 2702457-63-2)
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