3-((2-Oxo-2-(3-phenylisoxazol-5-yl)ethyl)thio)-4-(pyridin-3-yl)-1H-1,2,4-triazol-5(4H)-one CAS 712270-97-8
| CAS No. | 712270-97-8 |
| Molecular Formula | C18H13N5O3S |
| Molecular Weight | 379.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-((2-Oxo-2-(3-phenylisoxazol-5-yl)ethyl)thio)-4-(pyridin-3-yl)-1H-1,2,4-triazol-5(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.
3-((2-Oxo-2-(3-phenylisoxazol-5-yl)ethyl)thio)-4-(pyridin-3-yl)-1H-1,2,4-triazol-5(4H)-one (CAS 712270-97-8), molecular formula C18H13N5O3S and molecular weight 379.39 g/mol, is a CATO reference standard with documented purity and traceability.
3-((2-Oxo-2-(3-phenylisoxazol-5-yl)ethyl)thio)-4-(pyridin-3-yl)-1H-1,2,4-triazol-5(4H)-one (C18H13N5O3S) 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.
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 | C18H13N5O3S |
| Molecular Weight | 379.39 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Oxo Standards
- 3-Phenylisoxazol-5-yl 3-(2-chlorophenyl)-5-methylisoxazole-4-carboxylate (CAS 303987-03-3)
- 1-(3-Phenylisoxazol-5-yl)-2-((3-(trifluoromethyl)benzyl)thio)ethan-1-one (CAS 478066-86-3)
- 3-Phenylisoxazol-5-yl 2,4-dichlorobenzenesulfonate (CAS 320423-37-8)
- 2-((2-(5-Phenylisoxazol-3-yl)phenoxy)methyl)-4H-chromen-4-one (CAS 96440-20-9)
- (5-Phenylisoxazol-3-yl)(4-(pyrazin-2-yloxy)piperidin-1-yl)methanone (CAS 1448046-54-5)
- (5-Phenylisoxazol-3-yl)methyl 3,4-dichlorobenzoate (CAS 343374-57-2)
- (5-Phenylisoxazol-3-yl)methyl 3-(trifluoromethyl)benzoate (CAS 343374-56-1)
- (5-Phenylisoxazol-3-yl)(4-(thiophen-3-yl)piperidin-1-yl)methanone (CAS 1396799-01-1)
Recommended Standards
- 2-({4-[(2,4-dimethylphenyl)sulfamoyl]-2-nitrophenyl}amino)acetic acid (CAS 568570-15-0)
- 4-Oxo-6-{[(2-oxoazepan-3-yl)amino]sulfonyl}-1,4-dihydroquinoline-3-carboxylic acid (CAS 444336-45-2)
- (S)-2-((Diphenylphosphoryl)(methyl)amino)-3-phenylpropanoic acid (CAS 62316-83-0)
- 6-{[4-(Aminocarbonyl)piperidin-1-yl]sulfonyl}-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 317329-40-1)
- 1,3-Dichloro-1,3-dimethyl-1,3-diphenyldisiloxane (CAS 3582-72-7)
- 1-[(benzylcarbamoyl)amino]cyclopentane-1-carboxylic acid (CAS 929974-95-8)
- 2-(1H-1,2,3-Triazol-1-yl)pyridine (CAS 118078-97-0)
- 8-Oxa-3-azabicyclo[3.2.1]octane-4-thione (CAS 1291487-34-7)
- 4-Cyclopropoxy-2-iodo-N,N-dimethylaniline (CAS 1243472-74-3)
- N-methyl-6-(piperidin-4-yl)pyrazin-2-amine dihydrochloride (CAS 1361112-25-5)
- 3-(2-Fluorophenyl)-6-(trifluoromethyl)picolinonitrile (CAS 1214359-77-9)
- 3-Chloro-n-methylbenzene-1-sulfonamide (CAS 16937-19-2)
- Methyl 4-bromo-2-cyano-6-methoxybenzoate (CAS 1805528-50-0)
- Delicious Peptide (bovine) (CAS 73984-05-1)
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