4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-methylphenol CAS 475651-47-9
| CAS No. | 475651-47-9 |
| Molecular Formula | C11H12N2O2 |
| Molecular Weight | 204.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-methylphenol (CAS 475651-47-9), molecular formula C11H12N2O2 and molecular weight 204.23 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-methylphenol (C11H12N2O2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-methylphenol 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 | C11H12N2O2 |
| Molecular Weight | 204.23 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Ethyl Standards
- 1-(3-Phenyl-1,2,4-oxadiazol-5-yl)urea (CAS 5421-95-4)
- 4-(1,2,4-oxadiazol-3-ylmethoxy)benzaldehyde (CAS 1042775-08-5)
- 2-(5-phenyl-1,3,4-oxadiazol-2-yl)acetic acid (CAS 131467-94-2)
- methyl 3-(1,2,4-oxadiazol-5-yl)benzoate (CAS 1354951-60-2)
- 2-(3-Methyl-1,2,4-oxadiazol-5-yl)benzoic acid (CAS 475105-77-2)
- 2-(3-Phenyl-1,2,4-oxadiazol-5-yl)acetic acid (CAS 27349-43-5)
- 2-(5-Methyl-1,3,4-oxadiazol-2-yl)benzoic acid (CAS 898289-64-0)
- 3-(3-Methyl-1,2,4-oxadiazol-5-yl)benzoic acid (CAS 915707-45-8)
Recommended Standards
- 4-(4-Methoxyphenyl)-3-methylisoxazol-5-amine (CAS 902835-79-4)
- 4-(5-Methyl-1,4-dihydropyrimidin-4-yl)benzene-1,2-diol (CAS 741623-84-7)
- 4-(4-aminophenyl)piperidine-2,6-dione (CAS 954124-23-3)
- 4-(Cyclopropylmethoxy)-1,2-benzisoxazol-3-amine (CAS 868271-16-3)
- Celecoxib Impurity 1 (CAS 54779-81-6)
- [5-(3,4-Dichlorophenyl)-1,2-oxazol-3-yl]methyl N-(4-methylphenyl)carbamate (CAS 343374-60-7)
- 2-O-Acetylspiramycin I (CAS 89000-32-8)
- 2-[1-(difluoromethyl)-1h-imidazol-2-yl]-1-phenylethan-1-amine (CAS 1251922-76-5)
- 2-(4-((2-Methoxyethoxy)methyl)piperidin-1-yl)thiazol-4-amine (CAS 1365940-97-1)
- 2-Fluoro-n-(piperidin-4-yl)benzamide hydrochloride (CAS 1221724-07-7)
- (Aminosulfonyl)benzoic acid (CAS 38637-41-1)
- 1-(4-bromophenyl)-4-methyl-1h-pyraZole (CAS 1184673-82-2)
- 5-Cyclohexyl-N-methyl-1H-pyrazol-3-amine (CAS 1354949-33-9)
- Tirzepatide Impurity 59 (CAS CATO-C4X-324059)
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