(((4-Iodo-1,2-phenylene)bis(oxy))bis(methylene))dibenzene CAS 5736-55-0
| CAS No. | 5736-55-0 |
| Molecular Formula | C20H17IO2 |
| Molecular Weight | 416.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(((4-Iodo-1,2-phenylene)bis(oxy))bis(methylene))dibenzene (C20H17IO2) contains a steroid core, a hydroxyl group, an ether linkage, iodine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
(((4-Iodo-1,2-phenylene)bis(oxy))bis(methylene))dibenzene (CAS 5736-55-0), molecular formula C20H17IO2 and molecular weight 416.25 g/mol, is a CATO reference standard with documented purity and traceability.
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), (((4-Iodo-1,2-phenylene)bis(oxy))bis(methylene))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 | C20H17IO2 |
| Molecular Weight | 416.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | I-containing |
Related Iodo Standards
- (((2-Iodo-1,3-phenylene)bis(oxy))bis(methylene))dibenzene (CAS 888968-41-0)
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- 2-Iodo-5-methoxy-1-(phenylsulfonyl)-1H-pyrrolo[3,2-b]pyridine (CAS 1206181-42-1)
Recommended Standards
- 5-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-2-{[(4-chlorophenyl)methyl]sulfanyl}pyrimidine (CAS 338420-91-0)
- Methyl (S)-2-(tert-butoxy)-2-(4-iodo-1,6-dimethyl-1H-pyrrolo[2,3-b]pyridin-5-yl)acetate (CAS 1537883-82-1)
- tert-Butyl 4-(3-iodobenzoyl)piperazine-1-carboxylate (CAS 838845-52-6)
- 2-(4-Chloro-benzylsulfanyl)-4-(3-chloro-5-trifluoromethyl-pyridin-2-yl)-pyrimidine (CAS 1311279-53-4)
- 2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-(methylsulfonamido)phenyl)propanoic acid (CAS 266999-20-6)
- (3-Bromo-2-chloro-pyridin-4-yl)-carbamic acid tert-butyl ester (CAS 1622407-11-7)
- 4,4-DIchloro-1,1,1,3,3-pentafluorobutane (CAS 70566-51-7)
- 4-Cyclopropylbiphenyl (CAS 35076-77-8)
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- Bumetanide Impurity 41 (CAS 20532-06-3)
- 5-Cyclopropoxy-2-isopropyl-N,N-dimethylnicotinamide (CAS 1243347-56-9)
- 4-(Pentan-3-ylamino)benzonitrile (CAS 1019613-25-2)
- Semaglutide impurity 290 (CAS CATO-C4X-2226290)
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