Quinoline-7-sulfonic acid CAS 65433-96-7
| CAS No. | 65433-96-7 |
| Molecular Formula | C9H7NO3S |
| Molecular Weight | 209.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Quinoline-7-sulfonic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Quinoline-7-sulfonic acid (CAS 65433-96-7) is a high-purity analytical reference standard with the molecular formula C9H7NO3S and a molecular weight of 209.22 g/mol.
The molecular framework of Quinoline-7-sulfonic acid (C9H7NO3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C9H7NO3S |
| Molecular Weight | 209.22 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.) | 1975 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Quinoline Standards
- Quinoline-4-sulfonic acid (CAS 6046-42-0)
- Quinoline-6-sulfonic acid (CAS 65433-95-6)
- Quinoline-2-sulfonamide (CAS 952651-45-5)
- Quinoline-4-sulfonamide (CAS 270902-37-9)
- Quinoline-5-sulfonamide (CAS 415913-05-2)
- Quinoline-6-sulfonamide (CAS 89770-31-0)
- Quinoline-8-sulfonamide (CAS 35203-91-9)
- quinoline-2-sulfonyl fluoride (CAS 878376-36-4)
Recommended Standards
- 6046-38-4 6534AE C9H7NO3S Quinoline-2-sulfonic acid (CAS 6046-38-4)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com