3,5-Dichloro-4-nitropyridine 1-oxide CAS 18344-58-6
| CAS No. | 18344-58-6 |
| Molecular Formula | C5H2Cl2N2O3 |
| Molecular Weight | 208.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3,5-Dichloro-4-nitropyridine 1-oxide (CAS 18344-58-6), a certified reference material (molecular formula C5H2Cl2N2O3, MW 208.99 g/mol) for analytical method development and quality control.
3,5-Dichloro-4-nitropyridine 1-oxide (C5H2Cl2N2O3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 3,5-Dichloro-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 | C5H2Cl2N2O3 |
| Molecular Weight | 208.99 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloro Standards
- 4,6-Dichloro-5-nitropyrimidin-2-amine (CAS 134716-82-8)
- 2,5-Dichloro-4-nitropyridine 1-oxide (CAS 405230-81-1)
- 2,6-Dichloro-3-nitropyridin-4-ol (CAS 650140-87-7)
- 2,6-Dichloro-4-nitropyridine 1-oxide (CAS 2587-01-1)
- 3,6-Dichloro-5-nitropyridazin-4-amine (CAS 28682-68-0)
- 5,6-Dichloro-3-nitropyrazin-2-amine (CAS 87155-51-9)
- 2,3-Dichloro-5-fluorobenzoic acid (CAS 1160573-70-5)
- 3,4-Dichloro-5-fluorobenzoic acid (CAS 1160574-72-0)
Recommended Standards
- 6-Bromo-3,5-difluoropyridin-2-amine (CAS 1819379-84-4)
- 6-Bromo-2,3-difluorophenol (CAS 186590-23-8)
- 4-Bromo-2-(difluoromethyl)pyrimidine (CAS 1816289-47-0)
- 5-Bromo-2,3-difluorophenol (CAS 186590-26-1)
- Mo In Water (CAS CATO-CCRM106067)
- Methyl 3-(3,5-dimethylisoxazole-4-carboxamido)propanoate (CAS 1209700-54-8)
- Ethyl 2-[(Ethoxycarbonothioyl)thio]propionate (CAS 73232-07-2)
- 4-Chloro-2,6-difluorobenzoyl chloride (CAS 272104-45-7)
- 5-Fluoro-2-methyl-3-nitropyridine (CAS 1162674-71-6)
- 3-Bromo-4-(methylsulfanyl)benzaldehyde (CAS 694481-10-2)
- Cyclophosphamide impurity 41 (CAS CATO-C4X-230641)
- 6-Chloro-5-methylpyrimidin-2(1H)-one (CAS 101080-24-4)
- (1-Ethylindol-2-yl)methanol (CAS 40913-42-6)
- FMRF-Like Peptide from snail Helix aspersa (CAS 98495-35-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com