| CAS No. | 639516-58-8 |
| Molecular Formula | C11H13NO |
| Molecular Weight | 175.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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.
639516-58-8 2-Phenyl-d5-4,4-dimethyl-4,5-dihydrooxazole 4,4-dimethyl-2-(2,3,4,5,6-pentadeuteriophenyl)-5H-1,3-oxazole (CAS 639516-58-8) is a high-purity analytical reference standard with the molecular formula C11H13NO and a molecular weight of 175.23 g/mol.
Structurally, 639516-58-8 2-Phenyl-d5-4,4-dimethyl-4,5-dihydrooxazole 4,4-dimethyl-2-(2,3,4,5,6-pentadeuteriophenyl)-5H-1,3-oxazole (C11H13NO) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 175.23 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
| Molecular Formula | C11H13NO |
| Molecular Weight | 175.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 1 |