Ethyl 3-phenyl-5-(o-tolylthio)-1,2,4-triazine-6-carboxylate CAS 338957-17-8
| CAS No. | 338957-17-8 |
| Molecular Formula | C19H17N3O2S |
| Molecular Weight | 351.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 351.42 g/mol gives Ethyl 3-phenyl-5-(o-tolylthio)-1,2,4-triazine-6-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 3-phenyl-5-(o-tolylthio)-1,2,4-triazine-6-carboxylate (CAS 338957-17-8), molecular formula C19H17N3O2S and molecular weight 351.42 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl 3-phenyl-5-(o-tolylthio)-1,2,4-triazine-6-carboxylate (C19H17N3O2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C19H17N3O2S |
| Molecular Weight | 351.42 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
- Ethyl 3-(4-methylphenyl)-5-(phenylsulfanyl)-1,2,4-triazine-6-carboxylate (CAS 338965-77-8)
- Ethyl 5-[(4-methylphenyl)sulfanyl]-3-phenyl-1,2,4-triazine-6-carboxylate (CAS 338957-32-7)
- Ethyl 2-benzamido-4-phenylthiophene-3-carboxylate (CAS 43088-49-9)
- Methyl (2S)-2-(((benzyloxy)carbonyl)(prop-2-yn-1-yl)amino)-4-(methylsulfinyl)butanoate (CAS 792948-19-7)
- 3-Bromo-4-fluoro-1-(4-methoxybenzyl)-1H-pyrazole (CAS 1845722-88-4)
- 4-Chloro-6-(trifluoromethyl)pyrimidine-2-thiol (CAS 1379310-59-4)
- 2-Oxo-6-[3-(trifluoromethyl)phenyl]-1-{[3-(trifluoromethyl)phenyl]methyl}-1,2-dihydropyridine-3-carbonitrile (CAS 252059-83-9)
- tert-Butyl 7-iodo-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate (CAS 2517942-38-8)
- 2-Nitro-1-(trichloromethoxy)-4-(trifluoromethyl)benzene (CAS 1417567-23-7)
- Benzyl ethyl(4-((2-hydroxyethyl)amino)cyclohexyl)carbamate (CAS 1353964-92-7)
- 6-(Dimethylamino)-2-phenylpyridazin-3(2H)-one (CAS 5420-91-7)
- 1-Benzyl-2-oxo-1,2-dihydroquinoline-3-carbonitrile (CAS 78860-04-5)
- 2,6-Di-tert-butylpyridine 585-48-8 NSC-175805 NSC175805 Pyridine,6-bis(1,1-dimethylethyl)- Pyridine,6-di-tert-butyl- (CAS 585-48-8)
- C-telopeptide (CAS 162929-64-8)
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