3-Nitropyridine-2-sulfonamide CAS 75903-50-3
| CAS No. | 75903-50-3 |
| Molecular Formula | C5H5N3O4S |
| Molecular Weight | 203.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-Nitropyridine-2-sulfonamide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
3-Nitropyridine-2-sulfonamide (CAS 75903-50-3) is a high-purity analytical reference standard with the molecular formula C5H5N3O4S and a molecular weight of 203.18 g/mol.
The molecular framework of 3-Nitropyridine-2-sulfonamide (C5H5N3O4S) is characterized by a carbohydrate-derived structure, an amide group, a sulfone group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C5H5N3O4S |
| Molecular Weight | 203.18 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.) | 1978 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Nitropyridine Standards
- 2-Nitropyridine-3-sulfonamide (CAS 75903-61-6)
- 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)
- 4-Nitropyridine-3-sulfonic acid (CAS 33263-46-6)
- 5-Nitropyridine-2-sulfonic acid (CAS 465529-94-6)
- 5-nitropyridine-2-sulfonyl fluoride (CAS 1935641-61-4)
Recommended Standards
- 3-[(trifluoromethyl)sulfanyl]benzonitrile (CAS 660-44-6)
- 4-((Trifluoromethyl)thio)benzonitrile (CAS 332-26-3)
- 2-((Trifluoromethyl)thio)benzonitrile (CAS 37526-65-1)
- 2-((3,5-Dihydroxy-1,2,4-triazin-6-yl)thio)acetic acid (CAS 88891-73-0)
- 5-Chloro-N-methylbenzo[d]oxazol-2-amine (CAS 64037-24-7)
- (3R,4S,5R)-3-(acetyloxy)-4-(benzyloxy)-5-[(benzyloxy)methyl]-5-(fluoromethyl)oxolan-2-yl acetate (CAS 196604-56-5)
- Methyl 7-phenylcarbamoylheptanate, 98% (CAS 162853-41-0)
- 2-Amino-6-bromonicotinonitrile (CAS 1805556-84-6)
- Tri(ethylenediamine)nickel(II) chloride (CAS 13408-70-3)
- N-Hydroxy-4-isopropylnicotinimidamide (CAS 1937266-23-3)
- Dodecyl Ethyl Sulfid (CAS 2851-83-4)
- (S)-1-(3-Mercaptopropanoyl)-1,2,3,4-tetrahydroquinoline-2-carboxylic acid (CAS 75494-01-8)
- 3-Ethoxy-4-iodobenzoic acid (CAS 933672-16-3)
- Galanin-Like Peptide (rat) trifluoroacetate salt (CAS 245114-97-0)
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 18665070610 / Nicole.chen@cato-chem.com