2-Iodo-4-(methylsulfonyl)phenol CAS 20951-45-5
| CAS No. | 20951-45-5 |
| Molecular Formula | C7H7IO3S |
| Molecular Weight | 298.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Iodo-4-(methylsulfonyl)phenol (C7H7IO3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies 2-Iodo-4-(methylsulfonyl)phenol (CAS 20951-45-5), a certified reference material (molecular formula C7H7IO3S, MW 298.10 g/mol) for analytical method development and quality control.
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.
CATO manufactures 2-Iodo-4-(methylsulfonyl)phenol 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.
Physical & Chemical Properties
| Molecular Formula | C7H7IO3S |
| Molecular Weight | 298.10 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), 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; Hygroscopic; reseal immediately after opening; 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.) | 1962 |
| Halogen Content | I-containing |
| Sulfur Atoms | 1 |
Related Iodo Standards
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- 4-Iodo-6-methyl-2-(methylsulfonyl)pyrimidine (CAS 591248-68-9)
- 5-Iodo-4-methyl-2-(methylsulfonyl)pyrimidine (CAS 2089320-66-9)
- 5-iodo-2,4-dimethoxybenzaldehyde (CAS 121177-67-1)
- 4-Iodo-3-(2-methylbenzyl)-1H-pyrazole (CAS 1260838-10-5)
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Recommended Standards
- 2-Amino-5-iodobenzenesulfonamide (CAS 54773-54-5)
- 3-((2-Bromobenzyl)amino)-1,1,1-trifluoropropan-2-ol (CAS 866135-77-5)
- 1-(2-Bromo-5-(2,2,2-trifluoroethoxy)phenyl)ethan-1-amine (CAS 2167722-27-0)
- (3-Fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)dimethylphosphine oxide (CAS 2444346-61-4)
- 3-(4-Methylphenoxy)propionamide (CAS 861587-80-6)
- N-(4-Methoxyphenyl)-2-[(1-phenyl-1H-1,2,3,4-tetrazol-5-yl)sulfanyl]acetamide (CAS 298215-19-7)
- 2-Hydroxy-6-methylquinoxaline (CAS 5762-64-1)
- Phenyl-(1-pyridin-4-yl-ethyl)-amine (CAS 152127-34-9)
- 2-Acetamido-5-aminobenzenesulfonic acid (CAS 6973-05-3)
- 1,3,5-Trimethoxy-2-vinylbenzene (CAS 40243-91-2)
- 2-(Difluoromethyl)-5-iodo-3-(trifluoromethyl)pyridine-6-acetic acid (CAS 1805431-18-8)
- 1-(Azetidin-3-yl)-4-methylpiperazine (CAS 302355-82-4)
- (2-Iodo-4-methylphenyl)methanol (CAS 126156-20-5)
- a-Bag Cell Peptide (1-8) (CAS 87549-53-9)
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