N-(4-Chlorophenyl)-3,5-dimethyl-1,2-oxazole-4-carboxamide CAS 260047-13-0
| CAS No. | 260047-13-0 |
| Molecular Formula | C12H11ClN2O2 |
| Molecular Weight | 250.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including N-(4-Chlorophenyl)-3,5-dimethyl-1,2-oxazole-4-carboxamide.
N-(4-Chlorophenyl)-3,5-dimethyl-1,2-oxazole-4-carboxamide (CAS 260047-13-0), molecular formula C12H11ClN2O2 and molecular weight 250.68 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H11ClN2O2, N-(4-Chlorophenyl)-3,5-dimethyl-1,2-oxazole-4-carboxamide contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 250.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C12H11ClN2O2 |
| Molecular Weight | 250.68 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, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related N Standards
- Ethyl 1-(3-chlorophenyl)-1H-pyrazole-4-carboxylate (CAS 110821-32-4)
- Ethyl 1-(4-chlorophenyl)-1H-pyrazole-4-carboxylate (CAS 110821-33-5)
- 1-(4-Chlorophenyl)-3,5-dimethyl-1h-pyrazole-4-carboxylic acid (CAS 113808-87-0)
- 1-(3-Chlorophenyl)-3,5-dimethyl-1H-pyrazole-4-carboxylic acid (CAS 113808-90-5)
- Ethyl 1-(3-chlorophenyl)-1H-imidazole-4-carboxylate (CAS 114067-90-2)
- 1-(4-Chlorophenyl)-5-ethyl-1h-pyrazole-4-carboxylic acid (CAS 1152881-17-8)
- 1-(3-chlorophenyl)-5-ethyl-1H-pyrazole-4-carboxylic acid (CAS 1152882-32-0)
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Recommended Standards
- N-(4-Chloro-2-methylphenyl)-5-methylisoxazole-4-carboxamide (CAS 61643-37-6)
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- N-(4-chloro-2-methylphenyl)-2-(1H-1,2,4-triazol-1-yl)acetamide (CAS 478047-28-8)
- N-[(4-Chlorophenyl)methyl]-2-(4H-1,2,4-triazol-4-yl)acetamide (CAS 672950-18-4)
- Methyl 4-chloro-2-methanesulfonylbenzoate (CAS 773134-42-2)
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- (r)-5-(1-Amino-2-hydroxyethyl)-2-methoxyphenol (CAS 1212853-97-8)
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- [Nva12]-Tirzepatide (CAS CATO-C4X-324042)
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