Results 61 to 70 of about 129 (111)

The Chemistry of Formazans and Tetrazolium Salts

Chemical Reviews, 1955
exaly   +2 more sources

1,3‐ and 1,4‐Substituted Tetrazolium Salts

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Sergei V Voitekhovich, Pavel N Gaponik, Oleg A Ivashkevich   +2 more
openaire   +1 more source

The determination of lactic dehydrogenase with a tetrazolium salt

Analytical Biochemistry, 1960
Abstract A colorimetric method for the measurement of lactic dehydrogenase activity has been described, utilizing phenazine methosulfate as an intermediate agent for electron transfer from DPNH to a tetrazolium salt (INT). The use of gelatin to keep the formazan in colloidal suspension provided the added advantage of improving electron transfer via a
M M, NACHLAS, S I, MARGULIES, J D, GOLDBERG, A M, SELIGMAN   +3 more
openaire   +2 more sources

Tetrazolium Salts and Formazans

Progress in Histochemistry and Cytochemistry, 1976
The history of the tetrazolium salts and formazans goes back 100 years, to when Friese (1875) reacted benzene diazonium nitrate with nitromethane, to produce a cherry-red "Neue Verbindung". This was the first formazan. 19 years later, Von Pechmann and Runge (1894) oxidised a formazan to produce the first tetrazolium salt.
openaire   +2 more sources

Tetrazolium salts: Adrenergic blockade by blue tetrazolium

Experientia, 1969
Tetrazoliumblau blockiert die α-Rezeptoren. An der Nickhaut scheint diese Wirkung kompetitiv zu sein.
openaire   +2 more sources

Tetrazolium salts: a consumer's guide

The Histochemical Journal, 1976
The purities of seven tetrazolium salts, obtained from various commercial sources, have been assessed by thin layer chromatography, relative extinction coefficients, and melting points. MTT and INT were largely homogeneous on thin layer chromatography, although significant variations occurred in the melting point behaviour.
openaire   +2 more sources

THE ENZYMATIC REDUCTION OF TETRAZOLIUM SALTS BY AMINES

Canadian Journal of Biochemistry and Physiology, 1956
An enzyme system effecting the dehydrogenation of amines has been detected in rat brain and liver suspensions by the use of tetrazolium dyes as terminal electron acceptors. Kinetic data on this system are presented and the evidence for requirement of a cofactor is described.
J R, LAGNADO, T L, SOURKES
openaire   +2 more sources

The Effect of Detergents on the Reduction of Tetrazolium Salts

Archives of Biochemistry and Biophysics, 1995
Detergents, such as Triton X-100, markedly increase the reduction of tetrazolium salts by xanthine oxidase plus xanthine, or by NADH. This effect of detergent, in the case of the xanthine oxidase catalyzed process, is seen aerobically but not anaerobically.
S I, Liochev, I, Batinic-Haberle, I, Fridovich   +2 more
openaire   +2 more sources

The reduction of tetrazolium salts by plant mitochondria

Histochemie, 1968
Data has been obtained concerning the reduction of tetrazolium salts by mitochondria isolated from Jerusalem artichoke tubers with succinate as the substrate using a direct recording spectrophotometric method of assay. ATP was found to increase the rate of reduction of the tetrazolium salts, this being independent of the effect ATP had on the rate of ...
M, Kalina, J M, Palmer
openaire   +2 more sources

Tetrazolium salts and formazans

2020
Tetrazolium salts discussed here are of the 2-H type, and contain one or more five-membered heterocyclic rings, each of which carries a delocalized positive charge. Such a tetrazolium compound may be represented by a pair of Kekule forms. Tetrazolium salts can be reduced to formazans by a variety of mild reductants, including those of enzyme-catalyzed ...
openaire   +1 more source