(4R,4′R)-2,2′-(1H-Pyrazole-3,5-diyl)bis[4,5-dihydro-4-phenyloxazole] CAS 1207950-69-3
| CAS No. | 1207950-69-3 |
| Molecular Formula | C21H18N4O2 |
| Molecular Weight | 358.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(4R,4′R)-2,2′-(1H-Pyrazole-3,5-diyl)bis[4,5-dihydro-4-phenyloxazole] (CAS 1207950-69-3), molecular formula C21H18N4O2 and molecular weight 358.39 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C21H18N4O2, (4R,4′R)-2,2′-(1H-Pyrazole-3,5-diyl)bis[4,5-dihydro-4-phenyloxazole] contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 358.39 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C21H18N4O2 |
| Molecular Weight | 358.39 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 4 |
Recommended Standards
- (3R,4R)-rel-Dihydro-3,4-bis[(4-hydroxy-3-methoxyphenyl)methyl]-2(3H)-furanone 120409-94-1 rac Matairesinol trans-Dihydro-3,4-bis[(4-hydroxy-3-methoxyphenyl)methyl]-2(3H)-furanone (CAS 120409-94-1)
- 4-(Benzyl(2-(4-nitrophenoxy)ethyl)amino)butanoic acid (CAS 1245647-24-8)
- (Ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl) dibenzoate (CAS 120-56-9)
- Benzyl ((1H-benzo[d][1,2,3]triazol-1-yl)(phenyl)methyl)carbamate (CAS 125453-15-8)
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- Methyl 4-amino-3-methylcyclohexane-1-carboxylate (CAS 2042171-23-1)
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