1-(2,4-Dichlorophenyl)-4-hydroxy-6-oxo-1,6-dihydropyridazine-3-carboxylic acid CAS 121582-66-9
| CAS No. | 121582-66-9 |
| Molecular Formula | C11H6Cl2N2O4 |
| Molecular Weight | 301.08 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.
1-(2,4-Dichlorophenyl)-4-hydroxy-6-oxo-1,6-dihydropyridazine-3-carboxylic acid (CAS 121582-66-9) is a high-purity analytical reference standard with the molecular formula C11H6Cl2N2O4 and a molecular weight of 301.08 g/mol.
The molecular framework of 1-(2,4-Dichlorophenyl)-4-hydroxy-6-oxo-1,6-dihydropyridazine-3-carboxylic acid (C11H6Cl2N2O4) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures 1-(2,4-Dichlorophenyl)-4-hydroxy-6-oxo-1,6-dihydropyridazine-3-carboxylic acid 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 | C11H6Cl2N2O4 |
| Molecular Weight | 301.08 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 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.) | 1991 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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