3-Hydroxy-4-nitropyridine 1-oxide CAS 19355-03-4
| CAS No. | 19355-03-4 |
| Molecular Formula | C5H4N2O4 |
| Molecular Weight | 156.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carbohydrate-derived structure, an amide group, 3-Hydroxy-4-nitropyridine 1-oxide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 156.10 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).
3-Hydroxy-4-nitropyridine 1-oxide (CAS 19355-03-4) is a high-purity analytical reference standard with the molecular formula C5H4N2O4 and a molecular weight of 156.10 g/mol.
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.
CATO manufactures 3-Hydroxy-4-nitropyridine 1-oxide 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.
Physical & Chemical Properties
| Molecular Formula | C5H4N2O4 |
| Molecular Weight | 156.10 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 2 |
Related Hydroxy Standards
- 4-Hydroxy-6-oxo-1,6-dihydropyridazine-3-carboxylic acid (CAS 1442437-21-9)
- 6-Hydroxy-5-nitropyridin-2(1H)-one (CAS 16013-84-6)
- 4-Hydroxy-6-oxo-5,6-dihydropyridazine-3-carboxylic Acid (CAS 1823277-97-9)
- 2-Hydroxy-4-nitro-1H-pyrrole-3-carbaldehyde (CAS 263144-36-1)
- 4-Hydroxy-2-nitro-1H-pyrrole-3-carbaldehyde (CAS 263144-33-8)
- 4-Hydroxy-3-nitropyridine N-oxide (CAS 31872-57-8)
- 4-Hydroxy-6-oxo-1,6-dihydro-1,3,5-triazine-2-carboxamide (CAS 69391-08-8)
- 4-Hydroxy-2-oxo-2H-pyran-6-carboxylic Acid (CAS 108298-44-8)
Recommended Standards
- 1-Methyl-4,5-dioxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid (CAS 197652-34-9)
- 1H-Imidazole-2,4-dicarboxylic acid (CAS 175874-61-0)
- (2S)-4,4,4-Trifluoro-2-methylbutanoic acid (CAS 868666-12-0)
- (3S)-4,4,4-Trifluoro-3-hydroxy-3-methyl-2-butanone (CAS 2877757-07-6)
- 2-((3-Chlorophenyl)sulfonyl)-N-(5-(trifluoromethyl)-1,3,4-thiadiazol-2-yl)acetamide (CAS 339014-04-9)
- 4-(2-Sulfanylidene-2,3-dihydro-1H-1,3-benzodiazol-1-yl)butanoic acid (CAS 1459280-12-6)
- 2-(Dimethylamino)-6-methylpyrimidin-4(3H)-one (CAS 19810-73-2)
- trans-2-(3-Hydroxyphenyl)cyclopropanecarboxylic Acid (CAS 731812-28-5)
- 6-Amino-7-methyl-1H-pyrrolo[3,2-b]pyridin-2(3H)-one (CAS 1190309-78-4)
- Methyl 2-((tert-butoxycarbonyl)amino)-4-methyloxazole-5-carboxylate (CAS 1311278-29-1)
- 2-(3-Isopropoxyphenyl)butan-2-ol (CAS 1443337-70-9)
- Tert-butyl2-(chloromethyl)-6,7-dihydro-4h-thiazolo[4,5-c]pyridine-5-carboxylate (CAS 2306277-89-2)
- Methyl (S)-2-amino-2-cyclobutylacetate hydrochloride (CAS 1983066-39-2)
- Sperm Activating Peptide, Sea Urchin (CAS 140653-27-6)
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