| CAS No. | 733015-18-4 |
| Molecular Formula | C9H16N2OS2 |
| Molecular Weight | 232.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
6-ethyl-3-methyl-2-sulfanyl-3H,4H-thieno[2,3-d]pyrimidin-4-one (C9H16N2OS2) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
6-ethyl-3-methyl-2-sulfanyl-3H,4H-thieno[2,3-d]pyrimidin-4-one (CAS 733015-18-4), molecular formula C9H16N2OS2 and molecular weight 232.37 g/mol, is a CATO reference standard with documented purity and traceability.
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), 6-ethyl-3-methyl-2-sulfanyl-3H,4H-thieno[2,3-d]pyrimidin-4-one 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.
| Molecular Formula | C9H16N2OS2 |
| Molecular Weight | 232.37 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |