rel-(4R,4′R)-2,2′-(1,3-Phenylene)bis[4,5-dihydro-4-(1-methylethyl)oxazole] CAS 188255-26-7
| CAS No. | 188255-26-7 |
| Molecular Formula | C18H24N2O2 |
| Molecular Weight | 300.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including rel-(4R,4′R)-2,2′-(1,3-Phenylene)bis[4,5-dihydro-4-(1-methylethyl)oxazole].
rel-(4R,4′R)-2,2′-(1,3-Phenylene)bis[4,5-dihydro-4-(1-methylethyl)oxazole] (CAS 188255-26-7), molecular formula C18H24N2O2 and molecular weight 300.40 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H24N2O2, rel-(4R,4′R)-2,2′-(1,3-Phenylene)bis[4,5-dihydro-4-(1-methylethyl)oxazole] 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 300.40 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), rel-(4R,4′R)-2,2′-(1,3-Phenylene)bis[4,5-dihydro-4-(1-methylethyl)oxazole] 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.
Physical & Chemical Properties
| Molecular Formula | C18H24N2O2 |
| Molecular Weight | 300.40 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.) | 2010 |
| Nitrogen Atoms | 2 |
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