Sodium 1-(4-amino-2-sulfonatophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate CAS 94159-56-5
| CAS No. | 94159-56-5 |
| Molecular Formula | C10H7N3O6S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Sodium 1-(4-amino-2-sulfonatophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate (C10H7N3O6SNa) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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. 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).
Sodium 1-(4-amino-2-sulfonatophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate (CAS 94159-56-5), molecular formula C10H7N3O6SNa and molecular weight 320.23 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C10H7N3O6S 2*Na |
| Molecular Weight | 320.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 4-Bromo-N-(2-methoxy-5-methylphenyl)benzenesulfonamide (CAS 349122-26-5)
- N-(4-Methoxybenzyl)-N-2-pyridinyl-1,2-ethanediamine (CAS 109912-28-9)
- n-(3-Fluorobenzyl)-4-methylpentan-2-amine (CAS 1039940-97-0)
- 3-(Trifluoromethyl)-1,4,5,6-tetrahydropyrrolo[3,4-c]pyrazole hydrochloride (CAS 1262412-38-3)
- 1-[(4-bromo-2-chlorophenyl)methyl]-1H-pyrazol-4-amine (CAS 1602185-22-7)
- 1-propylpyrrolidin-3-amine (CAS 1096836-49-5)
- Semaglutide impurity 236 (CAS CATO-C4X-2226236)
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