3,5-Diamino-4-methylbenzenesulfonic acid CAS 98-25-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 98-25-9 |
| Molecular Formula | C7H10N2O3S |
| Molecular Weight | 202.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-Diamino-4-methylbenzenesulfonic acid (CAS 98-25-9) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C7H10N2O3S. Molecular weight: 202.23 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C7H10N2O3S |
| Molecular Weight | 202.23 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 | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 3-(6-oxo-2-sulfanylidene-1,3-diazinan-1-yl)propanoic acid (CAS 6972-08-3)
- 3-Amino-4-hydroxy-N-methylbenzenesulfonamide (CAS 80-23-9)
- 3-(2-Methoxyethoxy)thiophene-2-carboxylic acid (CAS 30490-97-2)
- 4-Formyl-1-methyl-1H-pyrrole-3-carboxylic acid (CAS 448236-04-2)
- 2-Methoxy-3-methyl-5-nitro-aniline (CAS 861609-39-4)
- N-(4-Bromobenzo[d]thiazol-2-yl)-4-(methylthio)benzamide (CAS 896359-66-3)
- 3-(furan-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-tosyl-1H-pyrrolo[2,3-b]pyridine (CAS 875639-27-3)
- 2-[5-(dimethoxymethyl)-3-pyridinyl]ethynyl-trimethylsilane 2-[5-(dimethoxymethyl)pyridin-3-yl]ethynyl-trimethyl-silane 879326-80-4 A842421 (CAS 879326-80-4)
- 3-(4-Hydroxy-3-methoxybenzyl)-4-hydroxy-5-methoxybenzaldehydeDISCONTINUED (CAS 202582-64-7)
- Semaglutide impurity 27 (CAS CATO-C4X-222627)
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