| CAS No. | 62721-97-5 |
| Molecular Formula | C20H17ClN2S |
| Molecular Weight | 352.88 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-(2-Chlorophenyl)-1-phenyl-5,6,7,8-tetrahydroquinazoline-4(1H)-thione.
2-(2-Chlorophenyl)-1-phenyl-5,6,7,8-tetrahydroquinazoline-4(1H)-thione (CAS 62721-97-5), molecular formula C20H17ClN2S and molecular weight 352.88 g/mol, is a CATO reference standard with documented purity and traceability.
2-(2-Chlorophenyl)-1-phenyl-5,6,7,8-tetrahydroquinazoline-4(1H)-thione (C20H17ClN2S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), 2-(2-Chlorophenyl)-1-phenyl-5,6,7,8-tetrahydroquinazoline-4(1H)-thione 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 | C20H17ClN2S |
| Molecular Weight | 352.88 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |