Ethyl 2-[4-(4-methoxyphenyl)-1-oxo-1,2-dihydrophthalazin-2-yl]acetate CAS 127828-84-6
| CAS No. | 127828-84-6 |
| Molecular Formula | C19H18N2O4 |
| Molecular Weight | 338.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ethyl 2-[4-(4-methoxyphenyl)-1-oxo-1,2-dihydrophthalazin-2-yl]acetate 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.
Ethyl 2-[4-(4-methoxyphenyl)-1-oxo-1,2-dihydrophthalazin-2-yl]acetate (CAS 127828-84-6) is a high-purity analytical reference standard with the molecular formula C19H18N2O4 and a molecular weight of 338.36 g/mol.
The molecular framework of Ethyl 2-[4-(4-methoxyphenyl)-1-oxo-1,2-dihydrophthalazin-2-yl]acetate (C19H18N2O4) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C19H18N2O4 |
| Molecular Weight | 338.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 2 |
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