Ethyl 4-(4-chlorophenyl)-2-((3-chloroquinoxalin-2-yl)amino)thiophene-3-carboxylate CAS 744230-47-5
| CAS No. | 744230-47-5 |
| Molecular Formula | C21H15Cl2N3O2S |
| Molecular Weight | 444.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ethyl 4-(4-chlorophenyl)-2-((3-chloroquinoxalin-2-yl)amino)thiophene-3-carboxylate is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Ethyl 4-(4-chlorophenyl)-2-((3-chloroquinoxalin-2-yl)amino)thiophene-3-carboxylate (CAS 744230-47-5), molecular formula C21H15Cl2N3O2S and molecular weight 444.33 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C21H15Cl2N3O2S, Ethyl 4-(4-chlorophenyl)-2-((3-chloroquinoxalin-2-yl)amino)thiophene-3-carboxylate contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 444.33 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C21H15Cl2N3O2S |
| Molecular Weight | 444.33 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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- 1-[4-(trifluoromethyl)-1,3-thiazol-2-yl]propan-1-amine (CAS 1248076-55-2)
- 1-(Pyridin-4-ylmethyl)-3-(trifluoromethyl)-1h-pyrazole-5-carboxylic acid (CAS 2197054-97-8)
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