5-(4-Chlorophenyl)-1,2-oxazol-3-amine CAS 51791-16-3
| CAS No. | 51791-16-3 |
| Molecular Formula | C9H7ClN2O |
| Molecular Weight | 194.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 5-(4-Chlorophenyl)-1,2-oxazol-3-amine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
5-(4-Chlorophenyl)-1,2-oxazol-3-amine (CAS 51791-16-3) is a high-purity analytical reference standard with the molecular formula C9H7ClN2O and a molecular weight of 194.62 g/mol.
The molecular framework of 5-(4-Chlorophenyl)-1,2-oxazol-3-amine (C9H7ClN2O) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H7ClN2O |
| Molecular Weight | 194.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- 1-(3-Chlorophenyl)-2,3-dihydro-1h-imidazol-2-one (CAS 109130-25-8)
- 5-(2-Chlorophenyl)-3-methyl-1,2,4-oxadiazole (CAS 1120271-16-0)
- 1-(2-Chlorophenyl)-1h-1,2,4-triazol-5-amine (CAS 1247575-06-9)
- 4-(2-Chlorophenyl)-1,3-oxazol-2-amine (CAS 1248965-63-0)
- 5-(4-Chlorophenyl)oxazol-2(3h)-imine (CAS 13576-51-7)
- 5-[(4-chlorophenyl)methyl]-2h-1,2,3,4-tetrazole (CAS 14064-61-0)
- 5-(3-Chlorophenyl)-1,2-oxazol-3-amine (CAS 1480388-66-6)
- 5-(3-Chlorophenyl)-4h-1,2,4-triazol-3-amine (CAS 168893-31-0)
Recommended Standards
- 5-(4-Chloro-3-methylphenyl)-2H-tetrazole (CAS 885278-43-3)
- 5-(4-Chlorophenyl)-1H-1,2,4-triazol-3-amine (CAS 98554-00-8)
- 5-(4-Chloro-2-methylphenyl)-1H-tetrazole (CAS 942317-38-6)
- 5-(4-Chlorophenyl)-2,4-dihydro-3H-pyrazol-3-one (CAS 59719-19-6)
- 2-Fluoro-5-hydroxy-3-methoxypyridine (CAS 1227511-69-4)
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- N-Isopropyl-1-methylpiperidin-4-amine dihydrochloride (CAS 1447671-78-4)
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- Tirzepatide Impurity 18 (CAS CATO-C4X-324018)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com