5-Methyl-3-(3-methylphenyl)-1,2-oxazole-4-carboxylic acid CAS 876717-65-6
| CAS No. | 876717-65-6 |
| Molecular Formula | C12H11NO3 |
| Molecular Weight | 217.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-Methyl-3-(3-methylphenyl)-1,2-oxazole-4-carboxylic acid 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.
5-Methyl-3-(3-methylphenyl)-1,2-oxazole-4-carboxylic acid (CAS 876717-65-6), molecular formula C12H11NO3 and molecular weight 217.22 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H11NO3, 5-Methyl-3-(3-methylphenyl)-1,2-oxazole-4-carboxylic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 217.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C12H11NO3 |
| Molecular Weight | 217.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Methyl Standards
- 1-[(4-Methylphenyl)methyl]-3-nitro-1h-pyrazole (CAS 1001510-36-6)
- [5-(4-Methylphenyl)isoxazol-3-yl]acetic acid (CAS 1018663-09-6)
- 5-Methyl-2-(3-methylphenyl)-2H-1,2,3-triazole-4-carboxylic acid (CAS 112630-40-7)
- 1-[(2-Methylphenyl)methyl]-3-nitro-1h-pyrazole (CAS 512809-17-5)
- 1-[(2-Methylphenyl)methyl]-4-nitro-1h-pyrazole (CAS 898053-40-2)
- 1-[(3-Methylphenyl)methyl]-3-nitro-1h-pyrazole (CAS 956358-68-2)
- 1-[(4-methylphenyl)methyl]-4-nitro-1h-imidazole (CAS 903821-75-0)
- 1-[(4-Methylphenyl)methyl]-4-nitro-1h-pyrazole (CAS 400877-60-3)
Recommended Standards
- 5-Methyl-2-(p-tolyl)-2h-1,2,3-triazole-4-carboxylic acid (CAS 39657-59-5)
- 5-Methyl-3-(4-methylphenyl)-1,2-oxazole-4-carboxylic acid (CAS 91569-59-4)
- 5-Methyl-2-(o-tolyl)-2h-1,2,3-triazole-4-carboxylic acid (CAS 42010-30-0)
- 5-Methyl-3-(o-tolyl)isoxazole-4-carboxylic Acid (CAS 91569-58-3)
- 3,4'-Difluoro-2-nitro-1,1'-biphenyl (CAS 1214355-00-6)
- Indole-5-carbonitrile (CAS 15861-24-2)
- 4-ethynyl-1H-indazole (CAS 1093847-83-6)
- Purine nucleoside Phosphorylase, 200 units/mg (CAS 9030-21-1)
- 4-(6-Formylpyridin-2-yl)hexanenitrile (CAS 1956379-39-7)
- 1-(2-Methoxyethyl)-3-nitro-1h-pyrazole (CAS 1003013-20-4)
- 5-(Carbamoylmethyl)thiophene-2-sulfonyl chloride (CAS 1479499-40-5)
- 2-((Trimethylsilyl)oxy)ethan-1-ol (CAS 4403-13-8)
- 5-(3-Methylbenzoyl)-2-methylpyridine (CAS 1187166-80-8)
- (Met(O)2?)-Glucagon (1-29) (human, rat, porcine) (CAS 75217-63-9)
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