4-Amino-3-methylbenzenesulfonic acid CAS 98-33-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 98-33-9 |
| Molecular Formula | C7H9NO3S |
| Molecular Weight | 187.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity 4-Amino-3-methylbenzenesulfonic acid (CAS 98-33-9) pharmaceutical standards reference standard. Molecular formula: C7H9NO3S. Molecular weight: 187.22 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C7H9NO3S |
| Molecular Weight | 187.22 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Amino Standards
- Methyl 5-amino-3-(methylthio)-1H-pyrazole-4-carboxylate (CAS 117717-02-9)
- 2-Amino-n-methylpyridine-3-sulfonamide (CAS 1250972-58-7)
- 2-Amino-3-(methylsulfonyl)phenol (CAS 129318-50-9)
- 3-Amino-2,4,6,7-tetrahydrothiopyrano[4,3-c]pyrazole 5,5-dioxide (CAS 1306604-52-3)
- 4-Amino-2-methylbenzenesulfonic acid (CAS 133-78-8)
- 2-Amino-3-(2-thioxo-2,3-dihydro-1H-imidazol-4-yl)propanoic acid (CAS 13552-61-9)
- 3-Amino-5-methylpyridine-2-sulfonamide (CAS 163137-50-6)
- Ethyl 2-amino-4-hydroxythiophene-3-carboxylate (CAS 16694-23-8)
Recommended Standards
- 4,6-Dimethylpyrimidine-2-sulfonamide (CAS 35762-76-6)
- 4-Aminophenyl methanesulfonate (CAS 24690-19-5)
- 4,6-Dimethylpyridine-3-sulfonic acid (CAS 39112-92-0)
- (4-Ethyl-5-formyl-1H-pyrrol-2-yl)boronic acid (CAS 1450981-95-9)
- 4,6-Dichloro-5-nitro-2-phenylpyrimidine (CAS 68921-91-5)
- 5-Chloro-2-iodo-3-methylbenzoic acid (CAS 1383706-84-0)
- Manganese (Salen)chloride (CAS 53177-12-1)
- Morpholino(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methanone (CAS 1036991-25-9)
- 3-Methyl-4-(3-methylpyrrolidin-1-yl)benzonitrile (CAS 1247450-79-8)
- Angiotensin II Antipeptide (CAS 121379-63-3)
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 13829788188 / jacky.chen@cato-chem.com