(3,5-Dimethylcyclopenta-2,5-diene-1,2-diyl)dibenzene CAS 4916-74-9
| CAS No. | 4916-74-9 |
| Molecular Formula | C19H18 |
| Molecular Weight | 246.35 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 (3,5-Dimethylcyclopenta-2,5-diene-1,2-diyl)dibenzene.
(3,5-Dimethylcyclopenta-2,5-diene-1,2-diyl)dibenzene (CAS 4916-74-9) is a high-purity analytical reference standard with the molecular formula C19H18 and a molecular weight of 246.35 g/mol.
The molecular framework of (3,5-Dimethylcyclopenta-2,5-diene-1,2-diyl)dibenzene (C19H18) is characterized by 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 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), (3,5-Dimethylcyclopenta-2,5-diene-1,2-diyl)dibenzene 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 | C19H18 |
| Molecular Weight | 246.35 g/mol |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
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