Methyl 3-(4-benzyl-7-chloro-3-oxo-3,4-dihydroquinoxalin-2-yl)propanoate CAS 568544-00-3
| CAS No. | 568544-00-3 |
| Molecular Formula | C19H17ClN2O3 |
| Molecular Weight | 356.80 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Methyl 3-(4-benzyl-7-chloro-3-oxo-3,4-dihydroquinoxalin-2-yl)propanoate (C19H17ClN2O3) is characterized by a steroid core, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Methyl 3-(4-benzyl-7-chloro-3-oxo-3,4-dihydroquinoxalin-2-yl)propanoate (CAS 568544-00-3) is a high-purity analytical reference standard with the molecular formula C19H17ClN2O3 and a molecular weight of 356.80 g/mol.
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.
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 | C19H17ClN2O3 |
| Molecular Weight | 356.80 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
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- Ethyl 2-{3-[(4-chlorophenyl)methyl]-4-oxo-3,4-dihydrophthalazin-1-yl}acetate (CAS 866151-32-8)
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- 3696-22-8 (p-Nitrophenyl)thiourea Thiourea, (4-nitrophenyl)- AI3-19634 EINECS 223-021-9 (CAS 3696-22-8)
- Pentyl 6-chloro-2-(p-tolyl)quinoline-4-carboxylate (CAS 355421-10-2)
- 4,6-Bis[3-(trifluoromethyl)phenoxy]pyrimidin-2-amine (CAS 866154-31-6)
- 3,5-Difluoro-2-(trifluoromethyl)benzaldehyde (CAS 2090130-84-8)
- (1R,7AR)-1-methyl-5,7a-dihydro-1H-pyrrolizin-3(2H)-one (CAS 733751-77-4)
- Fmoc-N-Me-HomoSer(Me)-OH （Fmoc-N-Me-hse(Me)-OH） (CAS 1979169-11-3)
- Cefotiam Impurity 28 (CAS 18997-69-8)
- Semaglutide impurity 276 (CAS CATO-C4X-2226276)
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