| CAS No. | 949527-19-9 |
| Molecular Formula | C18H10ClFN2S |
| Molecular Weight | 340.80 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.
4-Chloro-2-(3-fluorophenyl)-5-phenylthieno[2,3-d]pyrimidine (CAS 949527-19-9), molecular formula C18H10ClFN2S and molecular weight 340.80 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H10ClFN2S, 4-Chloro-2-(3-fluorophenyl)-5-phenylthieno[2,3-d]pyrimidine contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 340.80 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 4-Chloro-2-(3-fluorophenyl)-5-phenylthieno[2,3-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 | C18H10ClFN2S |
| Molecular Weight | 340.80 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |