4-Nitropyridine-3-sulfonic acid CAS 33263-46-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 33263-46-6 |
| Molecular Formula | C5H4N2O5S |
| Molecular Weight | 204.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Nitropyridine-3-sulfonic acid (CAS 33263-46-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C5H4N2O5S. Molecular weight: 204.16 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C5H4N2O5S |
| Molecular Weight | 204.16 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Nitropyridine Standards
- 5-Nitropyridine-2-sulfonic acid (CAS 465529-94-6)
- 2-Nitropyridine-3-sulfonamide (CAS 75903-61-6)
- 3-Nitropyridine-2-sulfonamide (CAS 75903-50-3)
- 5-nitropyridine-2-sulfonamide (CAS 75903-49-0)
- 5-Nitropyridine-3-sulfonamide (CAS 62009-07-8)
- 6-Nitropyridine-2-sulfonamide (CAS 75903-60-5)
- 6-Nitropyridine-3-sulfonamide (CAS 75903-64-9)
- 5-nitropyridine-2-sulfonyl fluoride (CAS 1935641-61-4)
Recommended Standards
- 4-Cyclopropyl-1-fluoro-2-(trifluoromethyl)benzene (CAS 2060046-71-9)
- 5-Fluoro-1-((2-hydroxyethoxy)methyl)pyrimidine-2,4(1H,3H)-dione (CAS 77474-50-1)
- 4-Cyano-6-fluoro-1H-indole-2-carboxylic acid (CAS 2092787-66-9)
- Ethyl 2-oxo-2-(2-phenylimidazo[1,2-a]pyridin-3-yl)acetate (CAS 561002-04-8)
- 3-(4-Fluorophenyl)thiazolidin-4-one (CAS 109052-07-5)
- Ethyl 6-(trifluoromethyl)-1H-indole-2-carboxylate (CAS 327-21-9)
- 2-Bromo-N-(2,5-dimethylphenyl)acetamide (CAS 349120-88-3)
- n-(2-(Piperidin-1-yl)ethyl)butan-2-amine (CAS 1178460-98-4)
- Cyclopenta(c,d)Pyrene (CAS 27208-37-3)
- Eledoisin Related Peptide (CAS 2990-43-4)
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