4-Chloro-5-fluoro-2-(4-nitrophenyl)pyridazin-3(2H)-one CAS 89593-75-9
| CAS No. | 89593-75-9 |
| Molecular Formula | C10H5ClFN3O3 |
| Molecular Weight | 269.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 269.62 g/mol gives 4-Chloro-5-fluoro-2-(4-nitrophenyl)pyridazin-3(2H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4-Chloro-5-fluoro-2-(4-nitrophenyl)pyridazin-3(2H)-one (CAS 89593-75-9), a certified reference material (molecular formula C10H5ClFN3O3, MW 269.62 g/mol) for analytical method development and quality control.
4-Chloro-5-fluoro-2-(4-nitrophenyl)pyridazin-3(2H)-one (C10H5ClFN3O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/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.
As a certified reference material (CRM), 4-Chloro-5-fluoro-2-(4-nitrophenyl)pyridazin-3(2H)-one 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 | C10H5ClFN3O3 |
| Molecular Weight | 269.62 g/mol |
| Appearance | Pale yellow to 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 |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- 2-Chloro-5-fluoro-4-(3-nitrophenoxy)-pyrimidine (CAS 1202760-39-1)
- 2-Chloro-n-{[4-fluoro-2-(trifluoromethyl)phenyl]methyl}acetamide (CAS 1311314-95-0)
- (6-Chloro-5-nitro-4-trifluoromethyl-pyridin-2-yl)-dimethyl-amine (CAS 1160995-05-0)
- 2-Chloro-5-(2,3-difluorophenyl)isonicotinic acid (CAS 1261757-54-3)
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- 5-Chloro-N-(2,6-difluorophenyl)pyrazine-2-carboxamide (CAS 1373940-69-2)
- {[3-chloro-5-(trifluoromethyl)pyridin-2-yl]methoxy}urea (CAS 338396-76-2)
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Recommended Standards
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- 1-Benzyl-5-phenyl-1H-1,2,3-triazole-4-carbonitrile (CAS 89844-78-0)
- 3-(Aminomethyl)-4-methyl-6-(trifluoromethyl)-2(1H)-pyridinone (CAS 771582-57-1)
- 1,4-Diamino-6-chloro-2-propoxyanthracene-9,10-dione (CAS 88605-41-8)
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- 2-Amino-3-(2-bromo-4-fluorophenyl)propanoic acid (CAS 1218236-90-8)
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