Quinoline-2-sulfinic acid, sodium salt CAS 139217-73-5
| CAS No. | 139217-73-5 |
| Molecular Formula | C9H7NO2S |
| Molecular Weight | N/A |
| 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.
Quinoline-2-sulfinic acid, sodium salt (CAS 139217-73-5) is a high-purity analytical reference standard with the molecular formula C9H7NO2SNa and a molecular weight of 216.21 g/mol.
The molecular framework of Quinoline-2-sulfinic acid, sodium salt (C9H7NO2SNa) 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).
As a certified reference material (CRM), Quinoline-2-sulfinic acid, sodium salt 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 | C9H7NO2S Na |
| Molecular Weight | 216.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Quinoline Standards
- Quinoline-8-carbonyl chloride (CAS 100517-41-7)
- Quinoline-6-thiol (CAS 100653-59-6)
- Quinoline-7,8-diol (CAS 101724-22-5)
- Quinoline, 7-bromo-2-hydrazinyl-3-methyl- (CAS 1017360-64-3)
- Quinoline-2,3-dicarbaldehyde (CAS 10222-53-4)
- Ethyl quinoline-7-carboxylate (CAS 104294-00-0)
- Ethyl quinoline-4-carboxylate (CAS 10447-29-7)
- Butyl quinoline-8-carboxylate (CAS 107456-13-3)
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