Tetra-substituted aryl cyclic formazan dyes

Details Tetra-substituted aryl cyclic formazan dyes Tetra-substituted aryl cyclic formazan dyes

1988-01-19

1990-01-09

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

436 74, 436 79, 436164, D06P 5004, G01N 2178, G01N 3320, G01N 3352

Patent

active

048929379

ABSTRACT:
Novel tetra-substituted aryl cyclic formazan dyes are useful in assaying for Li.sup.+.

REFERENCES:
patent: 4742010 (1988-05-01), Lin et al.
"Spectrophotometric Determination of Lithium with TMC-Crownformazane", Sitnikova et al., Zhurnal Analiticheskoi, vol. 37, No. 4, pp. 611-613, Apr. 1982.
"Multidentate Formazans, IV., Oxygen-Containing Macrocyclic Chelants (Cyclo-Tri-, -Tetra-, -Hexa- and -Nona-Decine Systems), with a Cyanoformazan Grouping", Dziomko et al., I, Zhurnal Obshchei Khimii, vol. 51, No. 10, pp. 2324-2331, Oct. 1981.
"Macrocyclic Formazans-Derivatives of (1,11,4,5,7,8)-Dioxa-Tetra-Azacuclotetradecyne", Dziomoko et al., II, Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1039-1040, Aug. 1979.

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