Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1990-08-08
1993-01-05
Ivy, C. Warren
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
436 79, 436 74, 549352, 549353, 546160, C07D32300, C07D21516
Patent
active
051772213
ABSTRACT:
The present invention resides in the discovery of a new class of compounds defined herein as "chromogenic hemispherands" 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;
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Chapoteau Eddy
Cram Donald J.
Czech Bronislaw P.
Gebauer Carl R.
Helgeson Roger C.
Greenman Jeffrey M.
Ivy C. Warren
Miles Inc.
Owens A. A.
The Regents of the University of California
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