Ethyl 5-methyl-4-oxo-3-(1H-pyrrol-1-yl)-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate CAS 305854-11-9
| CAS No. | 305854-11-9 |
| Molecular Formula | C14H13N3O3S |
| Molecular Weight | 303.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ethyl 5-methyl-4-oxo-3-(1H-pyrrol-1-yl)-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Ethyl 5-methyl-4-oxo-3-(1H-pyrrol-1-yl)-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate (CAS 305854-11-9), a certified reference material (molecular formula C14H13N3O3S, MW 303.34 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Ethyl 5-methyl-4-oxo-3-(1H-pyrrol-1-yl)-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 303.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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-methyl-4-oxo-3-(1H-pyrrol-1-yl)-3,4-dihydrothieno[2,3-d]pyrimidine-6-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 | C14H13N3O3S |
| Molecular Weight | 303.34 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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