| CAS No. | 1005563-76-7 |
| Molecular Formula | C15H15ClN4OS |
| Molecular Weight | 334.82 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.
CATO supplies 3-(3-(4-Chloro-3-methyl-1h-pyrazol-1-yl)propyl)-2-thioxo-2,3-dihydroquinazolin-4(1h)-one (CAS 1005563-76-7), a certified reference material (molecular formula C15H15ClN4OS, MW 334.82 g/mol) for analytical method development and quality control.
The molecular framework of 3-(3-(4-Chloro-3-methyl-1h-pyrazol-1-yl)propyl)-2-thioxo-2,3-dihydroquinazolin-4(1h)-one (C15H15ClN4OS) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 3-(3-(4-Chloro-3-methyl-1h-pyrazol-1-yl)propyl)-2-thioxo-2,3-dihydroquinazolin-4(1h)-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 | C15H15ClN4OS |
| Molecular Weight | 334.82 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |