4-Chloro-2-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-5-((2-hydroxyethyl)(methyl)amino)pyridazin-3(2H)-one CAS 338399-91-0
| CAS No. | 338399-91-0 |
| Molecular Formula | C13H11Cl2F3N4O2 |
| Molecular Weight | 383.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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 supplies 4-Chloro-2-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-5-((2-hydroxyethyl)(methyl)amino)pyridazin-3(2H)-one (CAS 338399-91-0), a certified reference material (molecular formula C13H11Cl2F3N4O2, MW 383.15 g/mol) for analytical method development and quality control.
Based on its molecular formula C13H11Cl2F3N4O2, 4-Chloro-2-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-5-((2-hydroxyethyl)(methyl)amino)pyridazin-3(2H)-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 383.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C13H11Cl2F3N4O2 |
| Molecular Weight | 383.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 4 |
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Recommended Standards
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- 2-Chloro-3-(difluoromethyl)-4-iodo-5-methylpyridine (CAS 1807061-09-1)
- Methyl 5-fluoro-2,3-dihydro-1H-indene-2-carboxylate (CAS 628732-04-7)
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- Semaglutide impurity 289 (CAS CATO-C4X-2226289)
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