| CAS No. | 303136-32-5 |
| Molecular Formula | C17H17ClN2O4S |
| Molecular Weight | 380.85 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 380.85 g/mol gives Ethyl 2-(2-chloroacetamido)-4-methyl-5-(phenylcarbamoyl)thiophene-3-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 2-(2-chloroacetamido)-4-methyl-5-(phenylcarbamoyl)thiophene-3-carboxylate (CAS 303136-32-5) is a high-purity analytical reference standard with the molecular formula C17H17ClN2O4S and a molecular weight of 380.85 g/mol.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, Ethyl 2-(2-chloroacetamido)-4-methyl-5-(phenylcarbamoyl)thiophene-3-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 380.85 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 Ethyl 2-(2-chloroacetamido)-4-methyl-5-(phenylcarbamoyl)thiophene-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.
| Molecular Formula | C17H17ClN2O4S |
| Molecular Weight | 380.85 g/mol |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |