5-Amino-1-naphthalenesulfonic Acid, 90% CAS 84-89-9
| CAS No. | 84-89-9 |
| Molecular Formula | C10H9NO3S |
| Molecular Weight | 223.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Amino-1-naphthalenesulfonic Acid, 90% (CAS 84-89-9), molecular formula C10H9NO3S and molecular weight 223.25 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 5-Amino-1-naphthalenesulfonic Acid, 90% is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 223.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), 5-Amino-1-naphthalenesulfonic Acid, 90% meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C10H9NO3S |
| Molecular Weight | 223.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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- 3-(1-Methyl-1H-pyrazol-3-yl)cyclobutanone (CAS 1353498-36-8)
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- N-((2-(2,3-Dimethylphenyl)benzo[d]oxazol-5-yl)carbamothioyl)-4-methylbenzamide (CAS 590396-78-4)
- 4-(2-Hydrazinoethyl)morpholine dioxalate (CAS 1182284-48-5)
- Semaglutide impurity 197 (CAS CATO-C4X-2226197)
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