5-(5-Methyl-1-phenyl-1H-pyrazol-4-yl)-1,3,4-oxadiazol-2(3H)-one CAS 1216993-02-0
| CAS No. | 1216993-02-0 |
| Molecular Formula | C12H10N4O2 |
| Molecular Weight | 242.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-(5-Methyl-1-phenyl-1H-pyrazol-4-yl)-1,3,4-oxadiazol-2(3H)-one (C12H10N4O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 242.23 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies 5-(5-Methyl-1-phenyl-1H-pyrazol-4-yl)-1,3,4-oxadiazol-2(3H)-one (CAS 1216993-02-0), a certified reference material (molecular formula C12H10N4O2, MW 242.23 g/mol) for analytical method development and quality control.
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.
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 | C12H10N4O2 |
| Molecular Weight | 242.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 4 |
Recommended Standards
- 1-(p-Tolyl)-1H-pyrazolo[3,4-d]pyrimidine-4,6-diol (CAS 1209777-97-8)
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- 3-(1-Benzofuran-3-yl)-1-methyl-1h-pyrazole-4-carboxylic acid (CAS 1197677-99-8)
- 2-(4-Cyanophenoxy)-N-(1h-pyrazol-3-yl)acetamide (CAS 1241144-10-4)
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- 6-Chloro-2-iodo-3-(2-(thiophen-3-yl)ethoxy)pyridine (CAS 1282528-85-1)
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- (S)-2-Amino-3-(2,6-dichlorophenyl)propanoic acid (CAS 111119-37-0)
- Des-Pro36-37-Tirzepatide (CAS CATO-CPTD788938)
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