| CAS No. | 1031599-03-7 |
| Molecular Formula | C19H21N3O4S |
| Molecular Weight | 387.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 387.45 g/mol gives 3-(2,4-Dioxo-1,4-dihydrothieno[3,2-d]pyrimidin-3(2H)-yl)-N-(4-propoxybenzyl)propanamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-(2,4-Dioxo-1,4-dihydrothieno[3,2-d]pyrimidin-3(2H)-yl)-N-(4-propoxybenzyl)propanamide (CAS 1031599-03-7) is a high-purity analytical reference standard with the molecular formula C19H21N3O4S and a molecular weight of 387.45 g/mol.
The molecular framework of 3-(2,4-Dioxo-1,4-dihydrothieno[3,2-d]pyrimidin-3(2H)-yl)-N-(4-propoxybenzyl)propanamide (C19H21N3O4S) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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.
| Molecular Formula | C19H21N3O4S |
| Molecular Weight | 387.45 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |