Crown Ethers

Crown Ethers

Crown ethers are cyclic polyether compounds renowned for their exceptional ability to selectively bind metal cations and organic ammonium ions. Their cavity size and electron-rich oxygen atoms enable precise ion recognition, making them powerful phase-transfer catalysts and molecular hosts. Crown ethers facilitate nucleophilic substitutions, polymerizations, and complexation processes under mild conditions. In materials science, they support ion transport, supramolecular assembly, and sensor development. Their tunable ring size and functionalization allow customized binding properties for chemical separation, catalysis, and analytical chemistry. Crown ethers remain indispensable tools in host–guest chemistry and molecular design.

4,4'(5')-Dibromodibenzo-18-Crown-6 CAS NO 87016-67-9

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CAS No.:87016-67-9

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Bis-[(15-Crown-5)-Methyl-2-Dodecyl-2-Methylmalonate CAS NO 87505-87-1

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CAS No.:87505-87-1

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4,4'(5')-Di-T-Butyldibenzo-18-Crown-6 CAS NO 88155-39-9

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CAS No.:88155-39-9

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1,4,7,10-Tetraazacyclododecane-1,4,7,10-Tetraacetic Acid, Tris(1,1-Dimethylethyl) Ethyl Ester CAS NO 825625-07-8

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CAS No.:825625-07-8

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-Alpha-,-Alpha--Bi[Ethylene Oxide], -Bta-,-Bta-,-Bta-,-Bta--Tetramethyl- (3Ci) CAS NO 860616-16-6

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CAS No.:860616-16-6

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[12]Anens3, n-[3-(1,4,7-Trithia-10-Aza-10-Cyclododecyl)Propyl]Dansylamide CAS NO 868365-96-2

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CAS No.:868365-96-2

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1,4,7,10-Tetraazacyclododecane-1,7-Diacetic Acid, Bis(Phenylmethyl) Ester CAS NO 871544-37-5

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CAS No.:871544-37-5

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n-Methoxymethylaza-15-Crown-5, 96 CAS NO 91043-70-8

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CAS No.:91043-70-8

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