4-Methylpyridine-3-sulfonic acid CAS 4808-71-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 4808-71-3 |
| Molecular Formula | C6H7NO3S |
| Molecular Weight | 173.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Methylpyridine-3-sulfonic acid (CAS 4808-71-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C6H7NO3S. Molecular weight: 173.19 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C6H7NO3S |
| Molecular Weight | 173.19 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.) | 1958 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methylpyridine Standards
- 3-Methylpyridine-4-sulfonic acid (CAS 14045-23-9)
- 6-Methylpyridine-2-sulfonic acid (CAS 18615-99-1)
- 4-Methylpyridine-2-sulfonic acid (CAS 18616-04-1)
- 2-Methylpyridine-4-sulfonic acid (CAS 408533-46-0)
- 3-Methylpyridine-2-sulfonic acid (CAS 223480-78-2)
- 5-Methylpyridine-3-sulfonic acid (CAS 4808-70-2)
- 6-Methylpyridine-3-sulfonic acid (CAS 4808-69-9)
- 3-Methylpyridine-4-sulfonamide (CAS 1341290-55-8)
Recommended Standards
- 4-Methoxy-2-methylthiazole-5-carboxylic acid (CAS 851755-42-5)
- 4-Methylpyrimidine-2-sulfonamide (CAS 35762-77-7)
- 4-Aminopyridine-2-sulfonamide (CAS 75903-57-0)
- 2-Hydroxy-3,5-dimethylbenzoic acid (CAS 6245-04-1)
- 2-(Dibenzylamino)acetic acid (CAS 17360-47-3)
- Cyclopent-3-ene-1,1-diyldimethanol (CAS 76910-02-6)
- 2-(2-Morpholinoethyl)-6-phenyl-4-(p-tolyl)pyridazin-3(2H)-one (CAS 23338-47-8)
- 1-(5-Chloro-2-methylphenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264045-55-7)
- 3-(Methylthio)propanamide (CAS 22551-25-3)
- Eosinophilotactic Peptide (CAS 61756-28-3)
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