Fluorogenic and chromogenic three-dimensional ionophores as selective reagents for detecting ions in biological fluids
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United States of America Patent
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Nov 10, 1992
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N/A
app pub date -
Jul 31, 1987
filing date -
Jul 31, 1987
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Expired
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Abstract
Novel fluorogenic and chromogenic three-dimensional ionophores are provided which selectively bond ions such as potassium, sodium, and lithium, even in neutral aqueous or alcohol media. The novel ionophores comprse an 'ion-recognizing system' fused to a 'signal-moiety' through one or more heteroatoms having a non-bonded electron pair. The signal-moieties are selected from the group consisting of fused ring heterocyclics, fused aromatics, and substituted aromatics having at least one nitro or azo moiety. The ion-recognizing system is a three-dimensional cryptand. The ionophores are ideal for the selective and direct termination of ions in biological or environmental samples and the like.
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