3-iodo-2-nitro-benzenesulfonyl chloride CAS 1261569-79-2
| CAS No. | 1261569-79-2 |
| Molecular Formula | C6H3ClINO4S |
| Molecular Weight | 347.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-iodo-2-nitro-benzenesulfonyl chloride (CAS 1261569-79-2), molecular formula C6H3ClINO4S and molecular weight 347.51 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/iodine substitution, an aromatic ring system, 3-iodo-2-nitro-benzenesulfonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 347.51 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), 3-iodo-2-nitro-benzenesulfonyl chloride 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 | C6H3ClINO4S |
| Molecular Weight | 347.51 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl/I-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related iodo Standards
- 3-Iodo-5-nitrobenzenesulfonyl chloride (CAS 1261585-55-0)
- 4-Iodo-2-nitrobenzene-1-sulfonyl chloride (CAS 1261611-49-7)
- Methyl 5-iodo-2-morpholinobenzoate (CAS 1131587-23-9)
- 3-Iodo-4-(morpholinomethyl)benzoic acid (CAS 1131614-72-6)
- Methyl 3-iodo-4-morpholinobenzoate (CAS 1131614-73-7)
- 1-(2-Iodo-4-nitrophenyl)-4-methylpiperazine (CAS 1254056-60-4)
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- 4-Iodo-3,5-diphenylisoxazole (CAS 24768-82-9)
Recommended Standards
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- 3'-Hydroxystanozolol-D3 (CAS 170082-17-4)
- 81779-11-5 6-tert-butyl-4,5,6,7-tetrahydro-1,3-benzothiazol-2-amine DTXSID80373840 (CAS 81779-11-5)
- 2-(4-Hydroxyphenyl)benzo[d]thiazole-6-carboxylic acid (CAS 149143-57-7)
- N'-(4,5-dihydronaphtho[1,2-b]thiophene-2-carbonyl)methanesulfonohydrazide (CAS 478033-49-7)
- 4-(Phenylthio)-1-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]quinoxaline (CAS 223929-36-0)
- 1,2-Hydrazinedicarboxamide 13C2,15N2 (CAS 1189730-21-9)
- Nintedanib Impurity 169 (CAS CATO-C4X-1814169)
- N,N-dibutyl-2-nitrobenzenesulfonamide (CAS 349397-42-8)
- Methyl 8-chlorooctanoate (CAS 16195-75-8)
- 1-(Imidazo[1,2-a]pyridin-2-yl)ethan-1-amine (CAS 1082859-17-3)
- D-Ile27-Tirzepatide (CAS CATO-CPTD788907)
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