rel-Oxazole, 2,2′-(1,2-phenylene)bis[4-ethyl-4,5-dihydro-, (4R,4′S)- CAS 220336-40-3
| CAS No. | 220336-40-3 |
| Molecular Formula | C16H20N2O2 |
| Molecular Weight | 272.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
rel-Oxazole, 2,2′-(1,2-phenylene)bis[4-ethyl-4,5-dihydro-, (4R,4′S)- (CAS 220336-40-3), molecular formula C16H20N2O2 and molecular weight 272.34 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of rel-Oxazole, 2,2′-(1,2-phenylene)bis[4-ethyl-4,5-dihydro-, (4R,4′S)- (C16H20N2O2) is characterized by a nitrogen-containing heterocyclic scaffold, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C16H20N2O2 |
| Molecular Weight | 272.34 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 DMSO, DMF, methanol |
| 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.) | 2019 |
| Nitrogen Atoms | 2 |
Related rel Standards
- Oxazole, 2,2′-(1,2-phenylene)bis[4-ethyl-4,5-dihydro-, (4S,4′S)- (CAS 352351-27-0)
- 2-{4-[(5-methyl-1,2-oxazole-4-)amido]phenyl}acetic acid (CAS 953734-04-8)
- 2-[4-(1,2-oxazole-3-amido)phenyl]acetic acid (CAS 1285096-62-9)
- 3-[(5-methyl-1,2-oxazole-4-)amido]benzoic acid (CAS 67387-54-6)
- 4-[(5-methyl-1,2-oxazole-4-)amido]benzoic acid (CAS 67387-52-4)
- 3-phenyl-1,2-oxazole-5-sulfonyl chloride (CAS 37543-50-3)
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