All-Rac-Α-Tocopheryl Acetate EP Impurity D CAS CATO-C4X-119535
| CAS No. | CATO-C4X-119535 |
| Molecular Formula | C32H54O3 |
| Molecular Weight | 486.77 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
All-Rac-Α-Tocopheryl Acetate EP Impurity D (CAS CATO-C4X-119535) is a certified pharmaceutical impurity reference standard with the molecular formula C32H54O3 and a molecular weight of 486.77 g/mol.
The molecular framework of All-Rac-Α-Tocopheryl Acetate EP Impurity D (C32H54O3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C32H54O3 |
| Molecular Weight | 486.77 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Recommended Standards
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- Semaglutide Impurity 185 (CAS CATO-C4X-2226185)
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