4-(Isopropylsulfonyl)aniline CAS 25355-76-4
| CAS No. | 25355-76-4 |
| Molecular Formula | C9H13NO2S |
| Molecular Weight | 199.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(Isopropylsulfonyl)aniline (C9H13NO2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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).
4-(Isopropylsulfonyl)aniline (CAS 25355-76-4), molecular formula C9H13NO2S and molecular weight 199.27 g/mol, is a CATO reference standard with documented purity and traceability.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C9H13NO2S |
| Molecular Weight | 199.27 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Isopropylsulfonyl Standards
- 3-(Isopropylsulfonyl)aniline (CAS 170856-37-8)
- 2-(Isopropylsulfonyl)aniline, 98% (CAS 76697-50-2)
- 2-(Isopropylsulfonyl)phenol (CAS 29725-22-2)
- 4-(Isopropylsulfonyl)phenol (CAS 494794-53-5)
- 2-(Isopropylsulfonyl)pyridin-3-amine (CAS 1247111-07-4)
- 6-(Isopropylsulfonyl)pyridin-3-amine (CAS 573676-17-2)
- 1-(Isopropylsulfonyl)-4-methylbenzene (CAS 51751-71-4)
- 3-(Isopropylsulfonyl)-1-methyl-1H-pyrazol-4-amine (CAS 1800562-08-6)
Recommended Standards
- 4-(2-Methanesulfonylethyl)aniline (CAS 596131-24-7)
- 4-(Methylthio)-2-(1h-pyrrol-1-yl)butanoic acid (CAS 954582-28-6)
- 3-Phenylpropane-1-sulfonamide (CAS 90220-25-0)
- 4-(Propan-2-yl)benzene-1-sulfonamide (CAS 6335-39-3)
- 1,3-Dicyclohexylbenzimidazolium chloride (CAS 1034449-15-4)
- 2-(4-Isopropyl-1-piperazinyl)-2-oxoacetic acid (CAS 705942-76-3)
- K-Ras ligand-Linker Conjugate 5 (CAS 2378261-85-7)
- 1-((3,5-Dimethyl-1H-pyrazol-1-yl)methyl)-5-methyl-1H-pyrazole-3-carboxamide (CAS 1263214-27-2)
- (S)-Benzyl (1-amino-2-oxopiperidin-3-yl)carbamate (CAS 1417900-08-3)
- Azothoate (CAS 5834-96-8)
- 2-((3-(3-Bromophenyl)-1H-1,2,4-triazol-5-yl)thio)-N-(5-chloro-2-methoxyphenyl)acetamide (CAS 332127-56-7)
- Prilocaine Impurity 01 (CAS 103-89-9)
- methyl 2-methyl-3-oxo-2H,3H-imidazo[1,5-a]pyridine-1-carboxylate (CAS 99615-34-6)
- Semaglutide impurity 72 (CAS CATO-C4X-222672)
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