4,4'-(((2-Bromo-5-iodo-1,4-phenylene)bis(oxy))bis(methylene))bis(2,2-dimethyl-1,3-dioxolane) CAS 1956375-89-5
| CAS No. | 1956375-89-5 |
| Molecular Formula | C18H24BrIO6 |
| Molecular Weight | 543.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,4'-(((2-Bromo-5-iodo-1,4-phenylene)bis(oxy))bis(methylene))bis(2,2-dimethyl-1,3-dioxolane) (CAS 1956375-89-5) is a high-purity analytical reference standard with the molecular formula C18H24BrIO6 and a molecular weight of 543.19 g/mol.
Structurally, 4,4'-(((2-Bromo-5-iodo-1,4-phenylene)bis(oxy))bis(methylene))bis(2,2-dimethyl-1,3-dioxolane) (C18H24BrIO6) contains a steroid core, a hydroxyl group, an ether linkage, bromine/iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 543.19 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C18H24BrIO6 |
| Molecular Weight | 543.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Br/I-containing |
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Recommended Standards
- 3-[2,6-dichloro-4-(trifluoromethyl)benzyl]-2-[2,6-dichloro-4-(trifluoromethyl)phenyl]-1,3-thiazolan-4-one (CAS 680215-61-6)
- Dysprosium(III) iodide (CAS 15474-63-2)
- Dronedarone Impurity 90 (CAS CATO-C4X-109290)
- 4,4'-Dichloro-2'-((5,7-dichloro-9H-fluoren-2-yl)carbamoyl)-[1,1'-biphenyl]-2-carboxylic acid (CAS 25698-57-1)
- 5-Ethyl-1-[(4-fluorophenyl)methyl]-1h-1,2,3-triazole-4-carboxylic acid (CAS 1266927-20-1)
- N-(3-bromo-5-fluorobenzyl)-1-cyclobutylmethanamine (CAS 1509355-50-3)
- 4-(2,3-Difluorobenzoyl)phenyl acetate (CAS 890099-95-3)
- 6-Chloropyridine-2-carbonitrile (CAS 33252-29-8)
- 8-Bromo-4,4-dimethyl-1,2,3,4-tetrahydroisoquinoline (CAS 1203683-45-7)
- 1-(4-Bromophenyl)-2-methyl-1H-imidazole (CAS 1312099-59-4)
- 2-(Benzylsulfanyl)-5-(2-hydroxyethyl)-6-methyl-3,4-dihydropyrimidin-4-one (CAS 338401-82-4)
- 2-(5-Methyl-2,3-dihydro-1-benzofuran-2-yl)acetic acid (CAS 1018251-36-9)
- (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-7-(tert-butoxy)-6-(tert-butoxycarbonyl)-7-oxoheptanoic acid (CAS 912354-10-0)
- Liraglutide Impurity 25 (CAS CATO-C4X-199225)
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