2-Carboxy-4-nitropyridine 1-oxide CAS 14933-78-9
| CAS No. | 14933-78-9 |
| Molecular Formula | C6H4N2O5 |
| Molecular Weight | 184.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2-Carboxy-4-nitropyridine 1-oxide (C6H4N2O5) contains a carbohydrate-derived structure, an amide group. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 184.11 g/mol, it falls into the medium-molecular-weight range. 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).
2-Carboxy-4-nitropyridine 1-oxide (CAS 14933-78-9), molecular formula C6H4N2O5 and molecular weight 184.11 g/mol, is a CATO reference standard with documented purity and traceability.
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.
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 | C6H4N2O5 |
| Molecular Weight | 184.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 6-Hydroxy-5-nitropicolinic acid (CAS 1595036-59-1)
- 1-(4-Chlorophenyl)-N-(3,4-dichlorophenyl)-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxamide (CAS 861212-23-9)
- 2-(1H-Indol-3-yl)-N-(1-(thiazol-2-yl)piperidin-4-yl)acetamide (CAS 1448058-31-8)
- 6-Chloro-3-(pyridin-3-yl)-[1,2,4]triazolo[4,3-b]pyridazine (CAS 1094260-38-4)
- N,N-dimethyl-4-(3-(pyridin-4-yl)propyl)piperidine-4-carboxamide (CAS 1316225-83-8)
- 3-Chloro-N-(4-fluorophenyl)propanamide (CAS 56767-37-4)
- 【禁售不询】Zopiclone (CAS 43200-80-2)
- Glycyrrhizol A (CAS 877373-00-7)
- 1-((4-Chlorophenyl)sulfonyl)-3,5-dimethylpiperidine (CAS 5344-11-6)
- 2-(4-Bromophenyl)-7-chloro-2H-pyrazolo[3,4-d]pyridazine (CAS 1956379-16-0)
- Allo-Thr5-Tirzepatide (CAS CATO-CPTD788934)
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