5,9,13,17-Tetramethyloctadeca-4,8,12,16-tetraenoic acid CAS 63839-70-3
| CAS No. | 63839-70-3 |
| Molecular Formula | C22H36O2 |
| Molecular Weight | 332.52 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 5,9,13,17-Tetramethyloctadeca-4,8,12,16-tetraenoic acid.
5,9,13,17-Tetramethyloctadeca-4,8,12,16-tetraenoic acid (CAS 63839-70-3), molecular formula C22H36O2 and molecular weight 332.52 g/mol, is a CATO reference standard with documented purity and traceability.
5,9,13,17-Tetramethyloctadeca-4,8,12,16-tetraenoic acid (C22H36O2) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
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 | C22H36O2 |
| Molecular Weight | 332.52 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
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