4-Chloro-3-nitro-2-pyridone CAS 165547-79-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 165547-79-5 |
| Molecular Formula | C5H3ClN2O3 |
| Molecular Weight | 174.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chloro-3-nitro-2-pyridone (CAS 165547-79-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C5H3ClN2O3. Molecular weight: 174.54 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C5H3ClN2O3 |
| Molecular Weight | 174.54 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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.) | 2004 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 2-Chloro-5-nitropyridin-4-ol (CAS 1211386-69-4)
- 4-Chloro-3-nitropyridin-2(3H)-one (CAS 1218764-78-3)
- 2-Chloro-5,6-difluoronicotinonitrile (CAS 1309371-71-8)
- 2-Chloro-5-nitropyridin-3-ol (CAS 1395037-06-5)
- 2-Chloro-4-nitropyridine 1-Oxide (CAS 14432-16-7)
- 5-Chloro-3-oxo-3,4-dihydropyrazine-2-carboxylic acid (CAS 150718-29-9)
- 2-Chloro-4-nitro-3-pyridinol (CAS 15128-85-5)
- 2-chloro-3-hydroxy-6-nitro-pyridin (CAS 15206-27-6)
Recommended Standards
- 5-Chloro-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carbaldehyde (CAS 1556124-18-5)
- 3-Chloro-2-nitropyridine 1-oxide (CAS 1704065-34-8)
- 5-Chloro-4-nitropyridin-3-ol (CAS 1780413-21-9)
- CyclopentylmethanamineHCl (CAS 58714-85-5)
- Levetiracetam-d6 (CAS 1133229-29-4)
- Tricyclohexylphosphonium Tetrafluoroborate (CAS 58656-04-5)
- 2-(3,5-Dimethylcyclohexylidene)acetic acid (CAS 861551-19-1)
- methyl(2-phenylpropan-2-yl)amine (CAS 66896-49-9)
- (E)-Cefotaxime Impurity 25 (CAS 66341-09-1)
- Liraglutide-d8 Tritrifluoroacetate (CAS CATO-C4X-199223)
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 13829788188 / jacky.chen@cato-chem.com