4-Bromo-4'-hexyl-1,1'-biphenyl CAS 63619-60-3
| CAS No. | 63619-60-3 |
| Molecular Formula | C18H21Br |
| Molecular Weight | 317.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Bromo-4'-hexyl-1,1'-biphenyl is closely related to bromine substitution, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-Bromo-4'-hexyl-1,1'-biphenyl (CAS 63619-60-3), molecular formula C18H21Br and molecular weight 317.26 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-Bromo-4'-hexyl-1,1'-biphenyl (C18H21Br) is characterized by bromine substitution, 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C18H21Br |
| Molecular Weight | 317.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Br-containing |
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- 5-Chloro-2-((2-fluorobenzyl)oxy)benzaldehyde (CAS 590360-21-7)
- 2'-(Furan-2-yl)-6'-methyl-5',6'-dihydro-4'h-spiro[cycloheptane-1,7'-pyrazolo[1,5-d][1,2,4]triazin]-4'-one (CAS 1253527-92-2)
- 5-([1,1'-Biphenyl]-4-yl)-5,7-dihydroindolo[2,3-b]carbazole (CAS 2446434-80-4)
- (3-Methoxyoxetan-3-yl)methanol (CAS 1620017-02-8)
- Sodium dithiosulfatoaurate dihydrate (CAS 10210-36-3)
- Semaglutide impurity 78 (CAS CATO-C4X-222678)
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