4-Methoxy-2-(methylsulfonyl)aniline CAS 4398-28-1
| CAS No. | 4398-28-1 |
| Molecular Formula | C8H11NO3S |
| Molecular Weight | 201.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Methoxy-2-(methylsulfonyl)aniline (C8H11NO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO supplies 4-Methoxy-2-(methylsulfonyl)aniline (CAS 4398-28-1), a certified reference material (molecular formula C8H11NO3S, MW 201.24 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.
As a certified reference material (CRM), 4-Methoxy-2-(methylsulfonyl)aniline 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 | C8H11NO3S |
| Molecular Weight | 201.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methoxy Standards
- 5-Methoxy-2-methylbenzene-1-sulfonamide (CAS 1261795-93-0)
- 5-Methoxy-2-(methylsulfonyl)aniline (CAS 1546045-10-6)
- Ethyl 2-methoxy-4-methylthiazole-5-carboxylate (CAS 156498-60-1)
- 2-Methoxy-4-(methylsulfonyl)aniline (CAS 41608-73-5)
- 2-Methoxy-4-methylbenzenesulfonamide (CAS 59554-39-1)
- 2-Methoxy-5-methylbenzenesulfonamide (CAS 82020-49-3)
- 3-Methoxy-2-methylbenzenesulfonamide (CAS 80563-85-5)
- 3-Methoxy-4-(methylsulfonyl)aniline (CAS 75259-31-3)
Recommended Standards
- 4-fluoro-7-methyl-1H-indole-2-carboxylic acid (CAS 891724-25-7)
- 4-Methoxy-2-methylbenzene-1-sulfonamide (CAS 59554-42-6)
- 4-Amino-3,5-dimethylbenzenesulfonic Acid (CAS 20804-27-7)
- 4-Methoxy-3-methylbenzene-1-sulfonamide (CAS 84910-99-6)
- 4,5-Dimethyldihydrofuran-2(3H)-one (CAS 6971-63-7)
- 2-(4-Bromophenoxy)benzonitrile (CAS 330793-13-0)
- N/A (CAS CATO-RMX-G003)
- 2-(1-Isopropyl-1H-pyrazol-4-yl)ethanol (CAS 201803-71-6)
- N-{1-(Hydrazinocarbonyl)-2-[(4-methyl-2-pyrimidinyl)amino]vinyl}benzenecarboxamide (CAS 339010-33-2)
- 3-(2,3-Difluoro-4-methylphenyl)propanal (CAS 955403-53-9)
- (R)-3,3-Dimethyl-1-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)butan-1-amine hydrochloride (CAS 1259299-99-4)
- 1-(3-Chloro-4-methoxyphenyl)-1-propanone (CAS 4394-54-1)
- 3-Quinolinecarbonitrile, 2-ethyl- (CAS 41969-16-8)
- Semaglutide impurity 28 (CAS CATO-C4X-222628)
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