4prime,4Prime(5Prime)-Di-tert-butyldicyclohexano-18-crown-6An Sr selective crown ether

4′,4″(5″)-Di-tert-butyldicyclohexano-18-crown-6 (CAS 223719-29-7)

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Application: An Sr selective crown ether
CAS Number: 223719-29-7
Molecular Weight: 484.71
Molecular Formula: C28H52O6
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* Refer to Certificate of Analysis for lot specific data (including water content).
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4′,4″(5″)-Di-tert-butyldicyclohexano-18-crown-6 is a lipophilic crown ether compound used in extraction chromatography for separation of strontium from nitric acid media. 4′,4″(5″)-Di-tert-butyldicyclohexano-18-crown-6 as a solution in 1-octanol is sorbed onto an inert substrate, where it serves to selectively isolate strontium from the chromatography mixture. This approach has been used to determine the presence of strontium in nuclear waste solutions and bioassay samples. A similar less lipophilic crown ether (lacking the t-butyl groups of this compound), Dicyclohexano-18-crown-6 (sc-239710), has also been described to demonstrate selectivity for strontium.


1. Horwitz, E.P., et al. 1991. Anal. Chem. 63: 522-525.
2. Dai, S., et al. 1999. J. Chem. Soc. 8: 1201-1202.

Physical State :
Storage :
Store at 4° C
Boiling Point :
190-195° C at 0.05 mmHg
Density :
0.965 g/mL
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
Transport :
UN 2810, Class 6.1, Packing group III
PubChem CID :

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Certificate of Analysis

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