| CAS No. | 175137-13-0 |
| Molecular Formula | C7H6N2OS |
| Molecular Weight | 166.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 166.20 g/mol gives 4-Hydroxy-7-methylthieno[3,2-d]pyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Hydroxy-7-methylthieno[3,2-d]pyrimidine (CAS 175137-13-0) is a high-purity analytical reference standard with the molecular formula C7H6N2OS and a molecular weight of 166.20 g/mol.
The molecular framework of 4-Hydroxy-7-methylthieno[3,2-d]pyrimidine (C7H6N2OS) is characterized by an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Hydroxy-7-methylthieno[3,2-d]pyrimidine 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 | C7H6N2OS |
| Molecular Weight | 166.20 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2007 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |