(4S,4′S)-2,2′-[5-(1,1-Dimethylethyl)-1,3-phenylene]bis[4,5-dihydro-4-(1-methylethyl)oxazole] CAS 1056697-75-6
| CAS No. | 1056697-75-6 |
| Molecular Formula | C22H32N2O2 |
| Molecular Weight | 356.50 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(4S,4′S)-2,2′-[5-(1,1-Dimethylethyl)-1,3-phenylene]bis[4,5-dihydro-4-(1-methylethyl)oxazole] (CAS 1056697-75-6), molecular formula C22H32N2O2 and molecular weight 356.50 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (4S,4′S)-2,2′-[5-(1,1-Dimethylethyl)-1,3-phenylene]bis[4,5-dihydro-4-(1-methylethyl)oxazole] (C22H32N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 356.50 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C22H32N2O2 |
| Molecular Weight | 356.50 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.) | 1988 |
| Nitrogen Atoms | 2 |
Recommended Standards
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