2-(Benzylthio)-9-(3,4,5-trimethoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one CAS 536981-11-0
| CAS No. | 536981-11-0 |
| Molecular Formula | C25H26N4O4S |
| Molecular Weight | 478.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-(Benzylthio)-9-(3,4,5-trimethoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-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.
CATO supplies 2-(Benzylthio)-9-(3,4,5-trimethoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one (CAS 536981-11-0), a certified reference material (molecular formula C25H26N4O4S, MW 478.56 g/mol) for analytical method development and quality control.
Based on its molecular formula C25H26N4O4S, 2-(Benzylthio)-9-(3,4,5-trimethoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 478.56 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).
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.
Physical & Chemical Properties
| Molecular Formula | C25H26N4O4S |
| Molecular Weight | 478.56 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2-(4-Methoxyphenyl)-4-oxo-4H-chromen-3-yl 2,3,4,5,6-pentamethylbenzene-1-sulfonate (CAS 301193-63-5)
- 4-[(4-{[(2Z)-3-phenylprop-2-enoyl]oxy}phenyl)sulfanyl]phenyl (2Z)-3-phenylprop-2-enoate (CAS 328263-25-8)
- Tepotinib impurity 3 (CAS 1103506-82-6)
- Brexpiprazole impurity 122 (CAS CATO-C4X-1131122)
- 1-Isopropyl-4-methyl-N-((1-propyl-1H-pyrazol-5-yl)methyl)-1H-pyrazol-3-amine hydrochloride (CAS 1856089-00-3)
- 2-((4-Methylpyrimidin-2-yl)thio)propanoic acid (CAS 876717-59-8)
- Methyl 3-amino-1-methyl-4-(phenylsulfonyl)-1H-pyrrole-2-carboxylate (CAS 1325305-12-1)
- 3,5-Dichloro-4-fluoromandelic acid (CAS 1806317-31-6)
- 2,7-Diiodo-9H-fluoren-9-ol (CAS 39155-69-6)
- N,N’-(4-Chloro-1,2-phenylene)bis(4-methylbenzenesulfonamide) (CAS 27185-54-2)
- 4-((2-Chloro-3-phenylallylidene)amino)-3-(furan-2-yl)-1H-1,2,4-triazole-5(4H)-thione (CAS 478253-73-5)
- 2-(Methyl{5-oxo-4-[(E,2E)-3-phenyl-2-propenylidene]-4,5-dihydro-1H-imidazol-2-yl}amino)acetic acid (CAS 860611-89-8)
- Regorafenib-13C-D3 (CAS 2126178-55-8)
- Semaglutide impurity 54 (CAS CATO-C4X-222654)
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