Chemistry: analytical and immunological testing – Metal or metal containing – Present in biological fluids
Patent
1985-12-18
1987-12-08
Richman, Barry S.
Chemistry: analytical and immunological testing
Metal or metal containing
Present in biological fluids
436 79, 436164, 436178, G01N 2175, G01N 3350
Patent
active
047118539
ABSTRACT:
Two novel trifluoromethyl-substituted chromogenic crown ethers are disclosed, 4'-(2",6"-dinitro-4"-trifluoromethylphenyl) aminobenzo-15-crown-5 and 4'-(2",4"-dinitro-6"-trifluoromethylphenyl) aminobenzo-15-crown 5. These compounds are useful as reagents for the extraction and spectrophotometric determination of potassium in the presence of sodium. Reagent solutions of these compounds and methods of utilizing the reagents for the analysis of potassium are disclosed and claimed.
REFERENCES:
patent: 4436923 (1984-03-01), Pacey et al.
Takagi, M., Nakamura, H., Uneo, K., A Novel Colorimetric Reagent for Potassium Based on Crown Ether Complex Formation, Anal. Lett., 1977, 10, 1115.
G. E. Pacey & B. P. Bubnis, A New Chromogenic Crown Ether 4"-Cyano-2",6"-Dinitro-4'-Aminobenzo-15-Crown-5 as an Alkali Metal Extraction Reagent, Analytical Letters, 13(A12), 1085-1091 (1980).
Naka-ura, H., Takagi, M., Uneo, K., Complexation and Extraction of Alkali Metal Ions by 4'-Picrylaminobenzo-18-Crown-6 Derivatives, Anal. Chem., 1980, 52, 1668.
Nakamura, H., Takagi, M., Uneo, K., Photometric Reagents and Alkali Metal Ions, Based on Crown-Ether Complex Formation-III, 4'-Picrylaminobenzo-15-Crown-5 Derivatives, Talanta, 1978, 26, 921.
Pacey et al, Analyst, vol. 106, pp. 636-640, Jun. 1981.
Bubnis Bernard P.
Pacey Gilbert E.
Hill Jr. Robert J.
Richman Barry S.
The President and Trustees of the Miami University
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