| CAS No. | 1330784-91-2 |
| Molecular Formula | C7H5BrN2OS |
| Molecular Weight | 245.10 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.
6-Bromo-2-methylthieno[3,2-d]pyrimidin-4(3H)-one (CAS 1330784-91-2), molecular formula C7H5BrN2OS and molecular weight 245.10 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 6-Bromo-2-methylthieno[3,2-d]pyrimidin-4(3H)-one (C7H5BrN2OS) is characterized by an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution, 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).
As a certified reference material (CRM), 6-Bromo-2-methylthieno[3,2-d]pyrimidin-4(3H)-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 | C7H5BrN2OS |
| Molecular Weight | 245.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |