6,6'-((2-Hydroxy-5-methyl-1,3-phenylene)bis(methylene))bis(2-(tert-butyl)-4-methylphenol) CAS 90-68-6
| CAS No. | 90-68-6 |
| Molecular Formula | C31H40O3 |
| Molecular Weight | 460.65 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.
6,6'-((2-Hydroxy-5-methyl-1,3-phenylene)bis(methylene))bis(2-(tert-butyl)-4-methylphenol) (CAS 90-68-6), molecular formula C31H40O3 and molecular weight 460.65 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 6,6'-((2-Hydroxy-5-methyl-1,3-phenylene)bis(methylene))bis(2-(tert-butyl)-4-methylphenol) (C31H40O3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), 6,6'-((2-Hydroxy-5-methyl-1,3-phenylene)bis(methylene))bis(2-(tert-butyl)-4-methylphenol) 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 | C31H40O3 |
| Molecular Weight | 460.65 g/mol |
| Appearance | Pale yellow to 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
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