4,4′′′-Diiodo-1,1′:4′,1′′:4′′,1′′′-quaterphenyl CAS 1770-82-7
| CAS No. | 1770-82-7 |
| Molecular Formula | C24H16I2 |
| Molecular Weight | 558.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 558.19 g/mol gives 4,4′′′-Diiodo-1,1′:4′,1′′:4′′,1′′′-quaterphenyl distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4,4′′′-Diiodo-1,1′:4′,1′′:4′′,1′′′-quaterphenyl (CAS 1770-82-7) is a high-purity analytical reference standard with the molecular formula C24H16I2 and a molecular weight of 558.19 g/mol.
Structurally, 4,4′′′-Diiodo-1,1′:4′,1′′:4′′,1′′′-quaterphenyl (C24H16I2) contains iodine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 558.19 g/mol, it falls into the moderately-high-molecular-weight range. 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.
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 | C24H16I2 |
| Molecular Weight | 558.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | I-containing |
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- 3-Chloro-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one (CAS 21413-77-4)
- Semaglutide Impurity 149 (CAS CATO-C4X-2226149)
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