5-Methyl-3-phenyl-4,5-dihydro-1,2-oxazole-5-carboxylic acid CAS 842954-77-2
| CAS No. | 842954-77-2 |
| Molecular Formula | C11H11NO3 |
| Molecular Weight | 205.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Methyl-3-phenyl-4,5-dihydro-1,2-oxazole-5-carboxylic acid (CAS 842954-77-2) is a high-purity analytical reference standard with the molecular formula C11H11NO3 and a molecular weight of 205.21 g/mol.
The molecular framework of 5-Methyl-3-phenyl-4,5-dihydro-1,2-oxazole-5-carboxylic acid (C11H11NO3) 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.
CATO manufactures 5-Methyl-3-phenyl-4,5-dihydro-1,2-oxazole-5-carboxylic acid 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.
Physical & Chemical Properties
| Molecular Formula | C11H11NO3 |
| Molecular Weight | 205.21 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 methanol, ethanol, DMSO |
| 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.) | 1987 |
| Nitrogen Atoms | 1 |
Recommended Standards
- 5'-Methyl-1',2'-dihydrospiro[1,3-dioxolane-2,3'-indole]-2'-one (CAS 75822-58-1)
- 5-Nitro-2-(propylamino)benzonitrile (CAS 731811-59-9)
- 5-Methoxy-3-(4-methoxyphenyl)isoxazole (CAS 25755-88-8)
- 5-Oxo-1-phenylpyrrolidine-3-carboxylic acid (CAS 39629-86-2)
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- 7-(1-methoxyethyl)-6,7-dihydro-5H-pyrazolo[1,5-a]pyridin-4-one (CAS 2489784-54-3)
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