Potassium 4-nitro-2-sulfonatobenzoate CAS 5344-48-9
| CAS No. | 5344-48-9 |
| Molecular Formula | C7H3NO7S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Potassium 4-nitro-2-sulfonatobenzoate (CAS 5344-48-9), molecular formula C7H3NO7SK and molecular weight 284.26 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Potassium 4-nitro-2-sulfonatobenzoate (C7H3NO7SK) contains a carbohydrate-derived structure, an amide group, a sulfone group. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 284.26 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), Potassium 4-nitro-2-sulfonatobenzoate 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 | C7H3NO7S 2*K |
| Molecular Weight | 284.26 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Potassium Standards
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Recommended Standards
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- 5-Chloro-3-ethyl-1H-indole (CAS 259865-75-3)
- 4-(5-Ethyl-1,3,4-oxadiazol-2-yl)benzoic acid (CAS 1342121-06-5)
- 3-(5-aminopyrimidin-2-yl)phenol (CAS 1152519-82-8)
- Terbutaline impurity 138 (CAS CATO-C4X-1183138)
- 2-(3-Amino-1-(tert-butoxycarbonyl)azetidin-3-yl)-2,2-difluoroacetic acid (CAS 2306270-05-1)
- Ethyl 2-(1-morpholinocyclopentyl)acetate (CAS 1315449-51-4)
- 5-Bromo-4-mercaptopyridine-3-sulfonamide (CAS 1352507-69-7)
- [y-Glu3]-Semaglutide Impurity 135 (CAS CATO-C4X-2226135)
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