4-Aminopyridine-2-sulfonamide CAS 75903-57-0
| CAS No. | 75903-57-0 |
| Molecular Formula | C5H7N3O2S |
| Molecular Weight | 173.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-Aminopyridine-2-sulfonamide (CAS 75903-57-0), molecular formula C5H7N3O2S and molecular weight 173.19 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, 4-Aminopyridine-2-sulfonamide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 173.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 4-Aminopyridine-2-sulfonamide meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H7N3O2S |
| 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 DMSO, DMF, methanol |
| 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 |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Aminopyridine Standards
- 2-Aminopyridine-4-sulfonamide (CAS 1248057-21-7)
- 3-aminopyridine-2-sulfonamide (CAS 94527-46-5)
- 5-Aminopyridine-2-sulfonamide (CAS 64356-57-6)
- 5-Aminopyridine-3-sulfonamide (CAS 62009-21-6)
- 6-Aminopyridine-3-sulfonamide (CAS 57187-73-2)
- 6-Aminopyridine-2-sulfonic acid (CAS 109682-22-6)
- 2-Aminopyridine-3-sulfonic acid (CAS 16250-07-0)
- 2-Aminopyridine-5-sulfonic Acid (CAS 16250-08-1)
Recommended Standards
- 4-amino-3-Pyridinesulfonamide (CAS 75903-62-7)
- 4-Methoxy-2-methylthiazole-5-carboxylic acid (CAS 851755-42-5)
- 4-(4-Fluorophenyl)pyridine (CAS 39795-58-9)
- 4-Methylpyridine-3-sulfonic acid (CAS 4808-71-3)
- 3-Cyclopropyl-5-methyl-1H-pyrazol-4-amine (CAS 2171392-93-9)
- tert-butyl N-(1-carbamothioylpiperidin-4-yl)carbamate (CAS 848498-90-8)
- (Cyclopropylmethyl)sulfamic acid (CAS 741219-91-0)
- N-(5-(4-Fluorophenyl)-1,3,4-oxadiazol-2-yl)-2,3-dihydrobenzo[b][1,4]dioxine-2-carboxamide (CAS 897734-98-4)
- Nolongandron (CAS 18470-94-5)
- 1-[4-(1-aminoethyl)phenyl]-5-methyl-2,3-dihydro-1h-imidazol-2-one (CAS 1209427-87-1)
- 2,5-Dimethyl-3-((4-methylpiperidin-1-yl)methyl)benzaldehyde (CAS 894213-77-5)
- 1-Ethyl-1H-pyrazole-3-carbaldehyde (CAS 942319-16-6)
- 2-(2-(3-Aminophenyl)-1h-imidazol-1-yl)ethan-1-ol (CAS 1184763-92-5)
- Insulin Degludec Impurity 15 (CAS CATO-C4X-215715)
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