Boehringer Mannheim Gmbh

Hans-Ralf Linke

Hans-Georg Batz

Klaus Stellner

Gunter Weimann

Helmut Lenz

Wolfgang Gruber

Fritz Stahler

Winfried Albert

Gerd Kleinhammer

Karl Wulff

Siegfried Looser

Karl-Dietrich Gundermann

Fritz Staehler

Gunter Wiemann

Gerlinde Deutsch

A method for the determination of the thyroxine-binding index in serum, which method comprises mixing the serum sample to be determined with a defined amount of thyroxine and a defined amount of a determinable enzyme covalently bound to thyroxine, contacting the resulting solution with anti-thyroxine antibodies present in the solid phase, separating the liquid phase from the solid phase, and measuring the activity of said determinable enzyme in one of the phases as a measure of the tyroxine-binding index in said serum sample.

Determination of the thyroxine-binding index in serum

New reactive asymmetrical dicarboxylic acid ester compounds of the formula ##STR1## wherein R.sub.1 is an alkyl radical containing up to 3 carbon atoms or is a digoxin or digitoxin residue, R.sub.2 and R.sub.3, which may be the same or different, are alkoxy radicals containing up to 3 carbon atoms or together represent an oxygen atom, X is a cyanomethoxy, succinimide-N-oxy, N-methyl-pyridiniumoxy, 2,4-dinitrophenoxy, 2,4,5-trichlorophenoxy, pentachlorophenoxy, phenylthio, p-nitrophenoxy, p-nitrophenylthio, piperidyl-N-oxy, phthalimido-N-oxy or benztriazol-N-oxy radical and n is 2, 3, 4 or 5, are useful for the preparation of reagents for the investigation of cardiac glycosides (Digitalis glycosides).

Reactive asymmetrical dicarboxylic acid esters and reagents for the

Process for the preparation of reactive, couplable derivatives of the thyroid hormones 3,3',5-triiodothyronine (T.sub.3) and 3,3',5,5'-tetraiodothyronine (T.sub.4) by reaction with reactive carboxylic acid derivatives, which process comprises sylylating all the functional groups of the thyroid hormone by reaction with a reactive triorganosylyl derivative and then reacting the persylylated derivative of the thyroid hormone thus obtained with an activated carboxylic acid derivative.

Process for the preparation of reactive, couplable derivatives of the

A method for the determination of creatine kinase-MB in serum by immunological exclusion of sub-unit M and measurement of the sub-unit B for the determination of creatine kinase, the improvement comprising, for the purpose of excluding the sub-unit M, adding to the reaction mixture comprising determination reagents and the creatine kinase-containing sample, monovalent fragments obtained from antibodies against the sub-unit M by proteolytic cleavage under reducing conditions.

Method and reagent for the determination of creatine kinase MB

The present invention provides a method for the determination of peroxidase in the presence of a compound, the enzyme-catalysed oxidation of which with a peroxy compound results in the emission of light, which is measured, wherein 7-dimethylaminonaphthalene-1,2-dicarboxylic acid hydrazide of the formula ##STR1## is used as light-emitting compound. The present invention also provides a reagent for the determination of peroxidase, comprising 7-dimethylaminonaphthalene-1,2-dicarboxylic acid hydrazide, a system providing hydrogen peroxide and a buffer substance of pH 6 to 9.

Reagent and method for the determination of peroxidase

New reactive asymmetrical dicarboxylic acid ester compounds of the formula ##STR1## wherein R.sub.1 is an alkyl radical containing up to 3 carbon atoms or is a digoxin or digitoxin residue, R.sub.2 and R.sub.3, which may be the same or different, are alkoxy radicals containing up to 3 carbon atoms or together represent an oxygen atom, X is a cyanomethoxy, succinimide-N-oxy, N-methyl-pyridiniumoxy, 2,4-dinitrophenoxy, 2,4,5-trichlorophenoxy, pentachlorophenoxy, phenylthio, p-nitrophenoxy, n-nitrophenylthio, piperidyl-N-oxy, phthalimido-N-oxy or benztriazol-N-oxy radical and n is 2, 3, 4 or 5, are useful for the preparation of reagents for the investigation of cardiac glycosides (Digitalis glycosides).

Novel alkylolamides of iodizable amino acids of the formula ##STR1## wherein, R.sup.1 is hydroxybenzyl, dihydroxybenzyl or imidazol-4-yl-methyl and

Alkylolamides of iodizable amino acids and immune test reagents

New reactive asymmetrical dicarboxylic acid ester compounds of the formula ##STR1## wherein R.sub.1 is an alkyl radical containing up to 3 carbon atoms or is a digoxin or digitoxin residue, R.sub.2 and R.sub.3, which may be the same or different, are alkoxy radicals containing up to 3 carbon atoms or together represent an oxygen atom, X is a cyanomethoxy, succinimide-N-oxy, N-methyl-pyridiniumoxy, 2,4-dinitrophenoxy, 2,4,5-trichlorophenoxy, pentachlorophenoxy, phenylthio, p-nitrophenoxy, p-nitrophenylthio, piperidyl-N-oxy, phthalimido-N-oxy or benztriazol-N-oxy radical and n is 2, 3, 4 or 5. are useful for the preparation of reagents for the investigation of cardiac glycosides (Digitalis glycosides).

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Raisting, Germany

Hans-Ralf Linke