Ethyl 2-((7-chloro-3-(2,4-dichloro-5-isopropoxyphenyl)-4-oxo-3,4-dihydroquinazolin-2-yl)thio)acetate CAS 339099-23-9
| CAS No. | 339099-23-9 |
| Molecular Formula | C21H19Cl3N2O4S |
| Molecular Weight | 501.81 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 2-((7-chloro-3-(2,4-dichloro-5-isopropoxyphenyl)-4-oxo-3,4-dihydroquinazolin-2-yl)thio)acetate (C21H19Cl3N2O4S) contains a flavonoid core, an amide group, a sulfone 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Ethyl 2-((7-chloro-3-(2,4-dichloro-5-isopropoxyphenyl)-4-oxo-3,4-dihydroquinazolin-2-yl)thio)acetate (CAS 339099-23-9), molecular formula C21H19Cl3N2O4S and molecular weight 501.81 g/mol, is a CATO reference standard with documented purity and traceability.
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.
As a certified reference material (CRM), Ethyl 2-((7-chloro-3-(2,4-dichloro-5-isopropoxyphenyl)-4-oxo-3,4-dihydroquinazolin-2-yl)thio)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.
Physical & Chemical Properties
| Molecular Formula | C21H19Cl3N2O4S |
| Molecular Weight | 501.81 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
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Recommended Standards
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- (2Z)-2-[(3-Bromophenyl)methylidene]-7-(4-chlorophenoxy)-3-phenyl-2,3-dihydro-1H-inden-1-one (CAS 337921-37-6)
- N-(3-Nitro-4-(pyrrolidin-1-yl)phenyl)acetamide (CAS 5367-38-4)
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