3-Chloro-4-iodobenzenesulfonyl chloride CAS 1261580-79-3
| CAS No. | 1261580-79-3 |
| Molecular Formula | C6H3Cl2IO2S |
| Molecular Weight | 336.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 336.96 g/mol gives 3-Chloro-4-iodobenzenesulfonyl chloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3-Chloro-4-iodobenzenesulfonyl chloride (CAS 1261580-79-3), a certified reference material (molecular formula C6H3Cl2IO2S, MW 336.96 g/mol) for analytical method development and quality control.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/iodine substitution, an aromatic ring system, 3-Chloro-4-iodobenzenesulfonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 336.96 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Chloro-4-iodobenzenesulfonyl 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 | C6H3Cl2IO2S |
| Molecular Weight | 336.96 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl/I-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-chloro-4-iodobenzene-1-sulfonyl chloride (CAS 1099660-72-6)
- 3-Chloro-5-iodobenzenesulfonyl chloride (CAS 1261497-71-5)
- 4-Chloro-2-iodobenzenesulfonyl chloride (CAS 1261730-58-8)
- 4-Chloro-1-[tris(propan-2-yl)silyl]-1H-pyrrolo[2,3-b]pyridine-5-carbaldehyde (CAS 924655-39-0)
- 6-Chloro-4-[(3-methoxyphenyl)methoxy]-2-methyl-3,4,4a,8a-tetrahydro-2H-1-benzothiopyran (CAS 1005082-26-7)
- 2-Chloro-N-[4-(4-hexylphenyl)-1,3-thiazol-2-yl]acetamide (CAS 565191-93-7)
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Recommended Standards
- 6-Bromo-3-iodo-1-methyl-1H-indazole (CAS 1260741-78-3)
- 5-Bromo-3-iodo-2-methyl-1H-pyrrolo[2,3-b]pyridine (CAS 1351478-13-1)
- 6-Bromo-3-iodo-7-methylimidazo[1,2-a]pyridine (CAS 1246184-61-1)
- 5-Bromo-3-iodo-7-methyl-1h-indazole (CAS 1360885-34-2)
- Levononidazole Disodium Ester Hydrate (CAS 1030019-20-5)
- Pemigatinib D6 (CAS 2649492-49-7)
- 3-Bromo-2-chloro-5-(trifluoromethyl)benzoic acid (CAS 2091224-21-2)
- 2-Amino-5-nitropyridin-3-ol (CAS 908248-27-1)
- 4,5,7-Trifluoro-1H-indole-2-carboxylic acid (CAS 247564-69-8)
- (3,4,5-Trimethoxybenzyl)hydrazine hydrochloride (CAS 3903-97-7)
- 3-(dimethylamino)-N’-hydroxybutanimidamide hydrochloride (CAS 2060523-83-1)
- 5-hydroxy-2-methylbenzamide (CAS 1243287-58-2)
- Fmoc-Arg(Pbf)-Gly-OH (CAS 660846-80-0)
- Semaglutide Impurity 18 (CAS 1671100-14-3)
Why CATO?
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