Method for detecting cations in a test sample utilizing chromoge

Details Method for detecting cations in a test sample utilizing chromoge Method for detecting cations in a test sample utilizing chromoge

1987-04-15

1989-08-22

Higel, Floyd D.

Chemistry: analytical and immunological testing

Metal or metal containing

Li, na, k, rb, cs, fr, be, mg, ca, sr, ba, ra

422 50, 422 68, 534752, 540469, C07D49818, C07D51318, C07D27300, C07C10704

Patent

active

048596060

ABSTRACT:
The present invention resides in the discovery of a class of compounds defined herein as "chromogenic cryptahemispherands" useful for the measurement of ions, in particular, ions in aqueous solution, which have the structure ##STR1## wherein: R, same or different, is hydrogen, lower alkyl, lower alkylidene, lower alkenyl, allyl or aryl;

REFERENCES:
patent: 3847949 (1974-11-01), Pedersen et al.
patent: 3966766 (1976-06-01), Lehn
patent: 4076724 (1978-02-01), Lehn
patent: 4080337 (1978-03-01), Cram

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