Ethyl 5-acetyl-2-(2-((4,6-dimethylpyrimidin-2-yl)thio)acetamido)-4-methylthiophene-3-carboxylate CAS 332162-21-7
| CAS No. | 332162-21-7 |
| Molecular Formula | C18H21N3O4S2 |
| Molecular Weight | 407.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 407.51 g/mol gives Ethyl 5-acetyl-2-(2-((4,6-dimethylpyrimidin-2-yl)thio)acetamido)-4-methylthiophene-3-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 5-acetyl-2-(2-((4,6-dimethylpyrimidin-2-yl)thio)acetamido)-4-methylthiophene-3-carboxylate (CAS 332162-21-7) is a high-purity analytical reference standard with the molecular formula C18H21N3O4S2 and a molecular weight of 407.51 g/mol.
Ethyl 5-acetyl-2-(2-((4,6-dimethylpyrimidin-2-yl)thio)acetamido)-4-methylthiophene-3-carboxylate (C18H21N3O4S2) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 5-acetyl-2-(2-((4,6-dimethylpyrimidin-2-yl)thio)acetamido)-4-methylthiophene-3-carboxylate 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 | C18H21N3O4S2 |
| Molecular Weight | 407.51 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
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- Semaglutide impurity 290 (CAS CATO-C4X-2226290)
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