Sodium 4-Aminobenzenesulfonate CAS 123333-70-0
| CAS No. | 123333-70-0 |
| 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 123333-70-0) is a high-purity analytical reference standard with the molecular formula C6H6NO3SNaH2O and a molecular weight of 213.18 g/mol.
Sodium 4-Aminobenzenesulfonate (C6H6NO3SNaH2O) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 H2O |
| Molecular Weight | 213.18 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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Sodium Standards
Recommended Standards
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- 4-Amino-N-benzylcyclohexane-1-carboxamide (CAS 1184287-08-8)
- 2-(Bromomethyl)-4,5-dimethylthiazole (CAS 100245-78-1)
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- (3,4-Dimethoxyphenyl)(1-methyl-1H-pyrrol-2-yl)methanol (CAS 944645-00-5)
- 4-Ethyl 2-methyl 5-amino-3-methylthiophene-2,4-dicarboxylate (CAS 61320-67-0)
- {[2-(Benzyloxy)phenyl]methyl}(2-methylpropyl)amine (CAS 861408-27-7)
- Semaglutide impurity 60 (CAS CATO-C4X-222660)
Why CATO?
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