Sodium 2-chloro-5-nitrobenzenesulfinate CAS 68683-43-2
| CAS No. | 68683-43-2 |
| Molecular Formula | C6H3ClNO4S |
| Molecular Weight | N/A |
| 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.
Sodium 2-chloro-5-nitrobenzenesulfinate (CAS 68683-43-2) is a high-purity analytical reference standard with the molecular formula C6H3ClNO4SNa and a molecular weight of 243.59 g/mol.
Owing to a salt form, an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, Sodium 2-chloro-5-nitrobenzenesulfinate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 243.59 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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), Sodium 2-chloro-5-nitrobenzenesulfinate 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 | C6H3ClNO4S Na |
| Molecular Weight | 243.59 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 4-Phenoxybenzamide (CAS 29921-15-1)
- 1-Ethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile (CAS 57712-57-9)
- Minecoside (CAS 51005-44-8)
- 15404-06-5 2-(N-Methyl-N-butylamino)ethylamine N1-butyl-N1-methylethane-1,2-diamine (CAS 15404-06-5)
- 1-Bromo-4-butylbenzene (CAS 41492-05-1)
- Tirzepatide Impurity 35 (CAS CATO-C4X-324035)
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