1-(4-Chlorophenyl)-3-(5-phenyl-1,3,4-oxadiazol-2-yl)urea CAS 25306-23-4
| CAS No. | 25306-23-4 |
| Molecular Formula | C15H11ClN4O2 |
| Molecular Weight | 314.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-(4-Chlorophenyl)-3-(5-phenyl-1,3,4-oxadiazol-2-yl)urea (CAS 25306-23-4), molecular formula C15H11ClN4O2 and molecular weight 314.73 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-(4-Chlorophenyl)-3-(5-phenyl-1,3,4-oxadiazol-2-yl)urea (C15H11ClN4O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 314.73 g/mol, it falls into the moderately-high-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).
As a certified reference material (CRM), 1-(4-Chlorophenyl)-3-(5-phenyl-1,3,4-oxadiazol-2-yl)urea 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.
Physical & Chemical Properties
| Molecular Formula | C15H11ClN4O2 |
| Molecular Weight | 314.73 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chlorophenyl Standards
- 1-(4-Chlorophenyl)-2,5-dihydro-5-oxo-1H-1,2,4-triazole-3-carboxylic acid phenylamide (CAS 1000577-01-4)
- 1-(2-Chlorophenyl)-5-oxo-N-phenyl-2,5-dihydro-1H-1,2,4-triazole-3-carboxamide (CAS 1000577-29-6)
- 4-(2-Chlorophenyl)-1-(3-nitrophenyl)-1H-pyrazol-5-amine (CAS 400088-60-0)
- 4-(3-Chlorophenyl)-1-(3-nitrophenyl)-1H-pyrazol-5-amine (CAS 324008-93-7)
- 4-(4-Chlorophenyl)-1-(3-nitrophenyl)-1H-pyrazol-5-amine (CAS 324008-90-4)
- 6-(4-Chlorophenyl)-3-cyclopropylisoxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 1263209-04-6)
- 4-((3-(4-Chlorophenyl)-1,2,4-oxadiazol-5-yl)methoxy)benzaldehyde (CAS 1623958-81-5)
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Recommended Standards
- 1-(3-Chloro-1-phenylpropoxy)-4-(trifluoromethyl)benzene (CAS 81347-68-4)
- 2-(1-(4-Chlorophenylsulfonyl)vinyl)-1,4-difluorobenzene (CAS 471905-61-0)
- 1-(3-Chloro-4-methylphenyl)-5-(pyridin-3-yl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1330085-88-5)
- 2-Chloro-N-methyl-N-(4-nitrophenyl)quinazolin-4-amine (CAS 827030-36-4)
- 2-(Ethylthio)-1H-benzo[d]imidazol-1-amine (CAS 151693-50-4)
- tert-Butyl 3-(2-(4-fluorophenyl)acetyl)benzylcarbamate (CAS 1017781-73-5)
- 4-((Dimethylamino)methyl)azepan-4-ol (CAS 1308384-33-9)
- 4-Hydroxymethyl-1-methyl-2-piperidone (CAS 20845-32-3)
- Cabotegravir Sodium (CAS 1051375-13-3)
- 1-(4-Fluorophenyl)butan-2-ol (CAS 1178477-11-6)
- 2-methyl-5,6-dihydro-4H-cyclopenta[c]pyrazole-3-carboxylic acid (CAS 129560-01-6)
- 5-(trifluoromethyl)thiophene-2-carboxylic acid (CAS 128009-32-5)
- 2-(4-Hydroxyphenyl)-3-(pyrimidin-2-yl)thiazolidin-4-one (CAS 821782-78-9)
- [3-31]-Semaglutide D (CAS C152H230N42O47)
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