1,1'-Biphenyl,4,4'-bis(4-ethylcyclohexyl)- CAS 91538-79-3
| CAS No. | 91538-79-3 |
| Molecular Formula | C28H38 |
| Molecular Weight | 374.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 1,1'-Biphenyl,4,4'-bis(4-ethylcyclohexyl)- (CAS 91538-79-3), a certified reference material (molecular formula C28H38, MW 374.60 g/mol) for analytical method development and quality control.
Based on its molecular formula C28H38, 1,1'-Biphenyl,4,4'-bis(4-ethylcyclohexyl)- contains a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 374.60 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), 1,1'-Biphenyl,4,4'-bis(4-ethylcyclohexyl)- 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 | C28H38 |
| Molecular Weight | 374.60 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
Related Biphenyl Standards
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