摘要:
A process is described for preparing, efficiently and with a high degree of purity N-alkylsulfonates of phenothiazine. The process consists in (a) the preparation of the phenothiazine anion, and (b) the reaction of said anion with cyclic alkyl sulfonates, such as 1,3-propane sultone and 1,4-butane sultone. This process is simpler, more direct, and more efficient than the procedures currently used for the synthesis of N-alkylsulfonates derivatives of phenothiazine. In addition, the products obtained with this process are far more pure than those obtained through current procedures and therefore ideal for bioanalytical applications that require high sensitivity, such as assays based on the measurement of peroxidase activity using chemiluminescence.
摘要:
A process is described for preparing, efficiently and with a high degree of purity N-alkylsulfonates of phenothiazine. The process consists in (a) the preparation of the phenothiazine anion, and (b) the reaction of said anion with cyclic alkyl sulfonates, such as 1,3-propane sultone and 1,4-butane sultone. This process is simpler, more direct, and more efficient than the procedures currently used for the synthesis of N-alkylsulfonates derivatives of phenothiazine. In addition, the products obtained with this process are far more pure than those obtained through current procedures and therefore ideal for bioanalytical applications that require high sensitivity, such as assays based on the measurement of peroxidase activity using chemiluminescence.
摘要:
Qualitative and quantitative electrochemiluminescent assays for analytes of interest present in multicomponent liquids are provided. These methods comprise contacting a sample with a reagent labeled with an electrochemiluminescent chemical moiety and capable of combining with the analyte of interest, exposing the resulting sample to electrochemical energy and detecting electromagnetic radiation emitted by the electrochemiluminescent chemical moiety.Further provided are methods for detecting and identifying the presence of a multiplicity of analytes in a liquid food or food homogenate. These methods comprise immersing a diagnostic reagent holder, provided with a multiplicity of reagents, into the food or food homogenate, removing the diagnostic reagent holder from the liquid food or food homogenate, and detecting and identifying the presence of a multiplicity of analytes of interest bound to the diagnostic reagent holder, thereby detecting and identifying the presence of a multiplicity of analytes of interest in the food or food homogenate.The invention further provides an enzyme immunoassay for coliform bacteria. This assay comprises inoculating a sample into a suitable medium for coliform reproduction, immobilizing coliforms present in the medium to a suitable surface, treating the surface with an antibody directed to the immobilized coliforms and detecting the presence of the immobilized coliforms immobilized to a suitable surface.
摘要:
A device for determining the concentration of heparin in a fluid sample comprising: a container for holding the fluid sample; a container for holding the dye solution; a mixer for mixing the fluid sample and the dye solution; an illumination source for illuminating a mixture comprising the fluid sample and the dye solution with electromagnetic radiation having a substantially continuous range of wavelengths in the visible range; a detector for detecting the absorption spectrum of the mixture within the substantially continuous range of wavelengths; a recorder for recording the absorption spectrum of the mixture within the substantially continuous range of wavelengths; and a calculator for calculating a spectral parameter.
摘要:
A labeled substance comprising a biological substance linked to a luminescent rhenium-containing label. Qualitative and quantitative electrochemiluminescent assays using the same. These methods comprise contacting a sample with a reagent labeled with an electrochemiluminescent chemical moiety containing rhenium and capable of combining with the analyte of interest, exposing the resulting sample to chemical, electrochemical, or electromagnetic energy and detecting electromagnetic radiation emitted by the electrochemiluminescent chemical moiety.
摘要:
A method of preparing biological implantation material fixed by means of aldehydes, in which the excess aldehyde is bound by treatment with an aminocarboxylic acid and the acid is selected from compounds of the general formula: ##STR1## in which n is 1 or 2 and X is a sulpho- (--SO.sub.3 H) or phosphono- (--PO.sub.3 H) group, and mixtures of such compounds.
摘要翻译:制备通过醛固定的生物植入材料的方法,其中过量的醛通过用氨基羧酸和酸处理而结合,该酸选自下列通式的化合物:(ⅠB) 其中n为1或2,X为磺基 - ( - SO 3 H)或膦 - ( - PO 3 H)基团,以及这些化合物的混合物。