Sodium 4-Aminobenzenesulfonate CAS 515-74-2
| CAS No. | 515-74-2 |
| Molecular Formula | C6H6NO3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Sodium 4-Aminobenzenesulfonate.
Sodium 4-Aminobenzenesulfonate (CAS 515-74-2), molecular formula C6H6NO3SNa and molecular weight 195.17 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C6H6NO3SNa, Sodium 4-Aminobenzenesulfonate 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 195.17 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C6H6NO3S Na |
| Molecular Weight | 195.17 g/mol |
| Purity | >80% |
| 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) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Sodium Standards
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- 6-Bromo-N-(4-methoxyphenyl)-2,3,4,9-tetrahydro-1H-carbazol-1-amine (CAS 812649-20-0)
- Semaglutide Impurity 146 (CAS 2645421-68-5)
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