Chemistry: physical processes – Physical processes – Crystallization
Patent
1979-11-08
1981-06-30
Turk, Arnold
Chemistry: physical processes
Physical processes
Crystallization
23903, G01N 3368
Patent
active
042760496
ABSTRACT:
Method for the determination of an amino benzoic acid or aminosulphonic acid in urine, plasma or serum. The method consists essentially in reacting a urine, plasma or serum sample with a compound of the 4-phenyl-spiro[furan-2(3H)1'-phthalan]-3,3'-dione type or with a compound of the 2-methoxy-2,4-diphenyl-3(2H)-furanone type or with o-phthaldialdehyde and subsequently carrying out a photometric measurement.
REFERENCES:
patent: 3745212 (1973-07-01), Benneville et al.
patent: 3871825 (1975-03-01), Leimburger et al.
patent: 3892530 (1975-07-01), Felix et al.
patent: 3933430 (1976-01-01), Hare
patent: 3969373 (1976-07-01), Cleeland, Jr. et al.
Reeder et al., Chem. Abstr. 89 (1978), 19514e.
Benson et al., Chem. Abstr. 82 (1975), 149032n.
Gillessen Dieter
Lergier William
Callwood James H.
Hoffmann-La Roche Inc.
Leon Bernard S.
Saxe Jon S.
Turk Arnold
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