Abstract: The present invention relates to chemical probes for the improved detection of cysteine in a test sample, preferably an aqueous test sample, as well as respective uses and kits.

Abstract: The present invention relates to a method for determining at least one analyte of interest. The present invention further relates to a kit, a complex, a method to synthesize a complex and the use thereof for detecting the analyte of interest in the sample.

Abstract: The invention relates to novel fluorescent dyes with multiple negatively charged groups in their ionized form which are 9-aminoacridines or 1-aminopyrene shaving of one of the following general formulae A-E: or salts or protonated forms thereof, wherein the ionizable groups are typically selected from the following: OH, SH, COOH, SO3H, OSO3H, SO2NHCN, P(O)(OH)2, P(O) (OH)2. The invention further relates to the use of these dyes as fluorescent tags, in particular for reducing sugars and glycans, and to carbohydrate-dye conjugates comprising these dyes as well as to methods for preparing the same.

Abstract: The present invention relates to a chemical compound or a salt or solvate thereof being a phenazine-, phenanthridine-, phenanthroline-, quinoline-, quinoxaline-, acridine-isoquinoline-, pyrazine- or pyridine-derivative comprising a conjugated ?-system and a ?-acceptor group, and to uses thereof. The present invention further relates to a chemistry matrix and to a test element comprising the chemical compound of the present invention. The present invention also relates to a method of determining the amount of an analyte in a test sample, comprising contacting said test sample with a chemical compound, with a chemistry matrix, or with a test element of the invention and estimating the amount of redox equivalents liberated or consumed by the chemical compound, by the chemical compound comprised in said chemistry matrix, or by the chemical compound comprised in said test element, in the presence of said test sample, thereby determining the amount of an analyte in said test sample.

Abstract: The present invention relates to a chemical compound or a salt or solvate thereof being a phenazine-, phenanthridine-, phenanthroline-, quinoline-, quinoxaline-, acridine- isoquinoline-, pyrazine- or pyridine-derivative comprising a conjugated ?-system and a ?-acceptor group, and to uses thereof. The present invention further relates to a chemistry matrix and to a test element comprising the chemical compound of the present invention. The present invention also relates to a method of determining the amount of an analyte in a test sample, comprising contacting said test sample with a chemical compound, with a chemistry matrix, or with a test element of the invention and estimating the amount of redox equivalents liberated or consumed by the chemical compound, by the chemical compound comprised in said chemistry matrix, or by the chemical compound comprised in said test element, in the presence of said test sample, thereby determining the amount of an analyte in said test sample.