Methyl 4-(4-chlorophenoxy)-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxylate CAS 338756-21-1
| CAS No. | 338756-21-1 |
| Molecular Formula | C18H13ClN2O4 |
| Molecular Weight | 356.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Methyl 4-(4-chlorophenoxy)-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxylate is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Methyl 4-(4-chlorophenoxy)-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxylate (CAS 338756-21-1), molecular formula C18H13ClN2O4 and molecular weight 356.76 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Methyl 4-(4-chlorophenoxy)-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 356.76 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 manufactures Methyl 4-(4-chlorophenoxy)-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxylate 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 | C18H13ClN2O4 |
| Molecular Weight | 356.76 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 |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Methyl Standards
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- Benzo[c][1,2,5]thiadiazol-5-yl(7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)methanone (CAS 1797142-46-1)
- 1-(3-Chloroquinoxalin-2-yl)piperidin-3-amine hydrochloride (CAS 1185307-70-3)
- Ethyl 4-[4-(N,N-dimethylamino)-phenyl]-4-oxobutanoate (CAS 117937-10-7)
- 1-(1-Methyl-1h-pyrazol-4-yl)butane-1,3-dione (CAS 1247584-05-9)
- N-(4-Ethoxyphenyl)-4-fluorobenzamide (CAS 101398-03-2)
- 1,5-Dichloro-2-difluoromethoxy-4-(trifluoromethoxy)benzene (CAS 1804513-07-2)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
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