4-Chloro-5-(methylamino)-2-(3-nitrophenyl)pyridazin-3(2H)-one CAS 84623-03-0
| CAS No. | 84623-03-0 |
| Molecular Formula | C11H9ClN4O3 |
| Molecular Weight | 280.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 280.67 g/mol gives 4-Chloro-5-(methylamino)-2-(3-nitrophenyl)pyridazin-3(2H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Chloro-5-(methylamino)-2-(3-nitrophenyl)pyridazin-3(2H)-one (CAS 84623-03-0), molecular formula C11H9ClN4O3 and molecular weight 280.67 g/mol, is a CATO reference standard with documented purity and traceability.
4-Chloro-5-(methylamino)-2-(3-nitrophenyl)pyridazin-3(2H)-one (C11H9ClN4O3) contains a nitrogen-containing heterocyclic scaffold, an amide 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. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Chloro-5-(methylamino)-2-(3-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 | C11H9ClN4O3 |
| Molecular Weight | 280.67 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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 |
| 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.) | 1981 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chloro Standards
- 3-Chloro-N-(tetrahydro-2-furanylmethyl)-5-(trifluoromethyl)-2-pyridinamine (CAS 1036444-19-5)
- 3-Chloro-2-(piperidin-4-yloxy)-5-(trifluoromethyl)pyridine (CAS 1092352-80-1)
- 2-((5-Chloro-2-methylphenyl)amino)-N-(2,2,2-trifluoroethyl)acetamide (CAS 1197789-11-9)
- 2-((3-Chloro-2-methylphenyl)amino)-N-(2,2,2-trifluoroethyl)acetamide (CAS 1197884-32-4)
- 2-((2-Chloro-4-methylphenyl)amino)-N-(2,2,2-trifluoroethyl)acetamide (CAS 1211184-56-3)
- 2-((3-Chloro-4-methylphenyl)amino)-N-(2,2,2-trifluoroethyl)acetamide (CAS 1211395-84-4)
- 3-Chloro-2-(piperidin-3-yloxy)-5-(trifluoromethyl)pyridine (CAS 1242268-26-3)
- 1-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)piperidin-3-ol (CAS 1292498-24-8)
Recommended Standards
- 3-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-N,N-dimethylpropanamide (CAS 338773-31-2)
- 5-Chloro-1-(2-(trifluoromethoxy)phenyl)pentan-1-one (CAS 898761-39-2)
- 2-(4-Chloro-2-isopropyl-6-(trifluoromethyl)phenyl)acetic acid (CAS 2143028-67-3)
- 5-Chloro-1-(3-(trifluoromethoxy)phenyl)pentan-1-one (CAS 898786-25-9)
- 3-(2-Phenoxyphenyl)propanoic acid (CAS 40492-92-0)
- 2-((5-(4-Methoxyphenyl)-1,3,4-oxadiazol-2-yl)amino)thiazol-4(5H)-one (CAS 89335-21-7)
- 5-Cyclopropyl-1-(1,1-dioxidotetrahydrothiophen-3-yl)-1h-pyrazole-3-carboxylic acid (CAS 956687-00-6)
- Methyl 3-(3-bromo-1H-pyrazol-1-yl)propanoate (CAS 1855890-47-9)
- (E)-({5-[(4-bromophenyl)sulfanyl]-1-methyl-3-phenyl-1H-pyrazol-4-yl}methylidene)[(4-fluorophenyl)methoxy]amine (CAS 321998-43-0)
- 5-(3-aminopropoxy)-2-(2,6-dioxo-3-piperidyl)isoindoline-1,3-dione (CAS 2207587-88-8)
- Loxoprofen impurity 98 (CAS CATO-C4X-148898)
- Methyl 3-Bromo-5-formylbenzoate (CAS 377734-27-5)
- 1-(4-(4-Bromophenoxy)-3-nitrophenyl)ethanone (CAS 1019529-86-2)
- Des-Gln24-Tirzepatide (CAS CATO-CPTD788949)
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