Crown Ethers and Aza-crown Ethers

Crown Ethers and Aza-crown Ethers — covers macrocyclic crown ethers and their aza derivatives, including triazacyclononane and tetraazacyclododecane structures, which have ring cavities of specific sizes for selectively binding particular metal ions or cations.

This category is used in supramolecular chemistry as ion receptors (hosts) for alkali and alkaline earth metal cations, phase transfer catalysts in organic reactions, and chelating ligands in the synthesis of coordination compounds and metal complexing agents for separation or metal-based labeling applications.

Example products in this collection: TCI T3910 56491-86-2 2,2',2''-(1,4,7-Triazonane-1,4,7-triyl)triacetic Acid, TCI B6131 1190101-34-8 4-[4,7-Bis(2-tert-butoxy-2-oxoethyl)-1,4,7-triazonan-1-yl]-5-tert-butoxy-5-oxopentanoic Acid, TCI T3356 18084-64-5 1,4,7,10-Tetrabenzyl-1,4,7,10-tetraazacyclododecane, TCI C0858 294-93-9 12-Crown 4-Ether, TCI T2642 137076-54-1 Tri-tert-butyl 1,4,7,10-Tetraazacyclododecane-1,4,7,10-tetraacetate, TCI C0859 33100-27-5 15-Crown 5-Ether, TCI T2540 126320-57-8 Tetraethyl 1,4,8,11-Tetraazacyclotetradecane-1,4,8,11-tetraacetate, TCI C0860 17455-13-9 18-Crown 6-Ether.

Select the ring size and the number of oxygen or nitrogen donor atoms according to the radius of the target ion, and pay attention to the tert-butyl or benzyl ester protecting groups on aza-crown derivatives for stepwise synthesis. All products are genuine Tokyo Chemical Industry (TCI) Japan products, with purity, packaging, and storage conditions listed on each item's page.

Other parallel categories under Supramolecular Host Materials, often used together in a single laboratory workflow:

Back to Supramolecular Host Materials. For large-volume procurement, special packaging, or specific grades, contact the AMI Scientific team — the official TCI Japan distributor in Indonesia — to check availability and lead time directly from Japan.

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