| CAS No. | 893801-23-5 |
| Molecular Formula | C14H17N3O4S |
| Molecular Weight | 323.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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.
Ethyl 5-methyl-2-(morpholin-4-yl)-4-oxo-3h,4h-thieno[2,3-d]pyrimidine-6-carboxylate (CAS 893801-23-5) is a high-purity analytical reference standard with the molecular formula C14H17N3O4S and a molecular weight of 323.37 g/mol.
Ethyl 5-methyl-2-(morpholin-4-yl)-4-oxo-3h,4h-thieno[2,3-d]pyrimidine-6-carboxylate (C14H17N3O4S) contains a nitrogen-containing heterocyclic scaffold, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Ethyl 5-methyl-2-(morpholin-4-yl)-4-oxo-3h,4h-thieno[2,3-d]pyrimidine-6-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 | C14H17N3O4S |
| Molecular Weight | 323.37 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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |