This disclosure relates to a method and reagents for determining ligands in biological fluids such as serum, plasma, spinal fluid, amnionic fluid and urine. In particular, this disclosure relates to a fluorescent polarization immunoassay procedure and to a novel class of tracer compounds employed as reagents in such procedures. The procedure disclosed combines the specificity of an immunoassay with the speed and convenience of fluorescent polarization techniques to provide a means for determining the amount of a specific ligand present in a sample.
MALEIMIDE ADDUCT CONJUGATES OF PROCAINAMIDE AND NAPA
申请人:BOEHRINGER MANNHEIM CORPORATION
公开号:EP0734526A1
公开(公告)日:1996-10-02
EP0734526A4
申请人:——
公开号:EP0734526A4
公开(公告)日:2000-03-29
US5439798A
申请人:——
公开号:US5439798A
公开(公告)日:1995-08-08
[EN] MALEIMIDE ADDUCT CONJUGATES OF PROCAINAMIDE AND NAPA<br/>[FR] CONJUGUES DE PRODUITS D'ADDITION MALEIMIDIQUES DE PROCAINAMIDE ET NAPA
申请人:BOEHRINGER MANNHEIM CORPORATION
公开号:WO1995016894A1
公开(公告)日:1995-06-22
(EN) Novel derivatives of procainamide and N-acetylprocainamide (NAPA) are disclosed having formula (a) wherein: X = hydrogen or acetyl; R1 = an alkyl group having 1 to 3 carbon atoms; $i(m) = an integer from 2 to 10; R2 = an alkyl, cycloalkyl or aryl group having 2 to 10 carbon atoms; Z = a poly(amino acid); and $i(n) = 1 to $i(p) where $i(p) = MW of Z/1000. The derivatives include maleimide conjugates of proteins or poly(amino acids), enzymes, enzyme donor polypeptides and labelling substances. Novel activated hapten intermediates useful in the preparation of the conjugates and methods for synthesis of the hapten intermediates and derivatives are also disclosed.(FR) L'invention se rapporte à de nouveaux dérivés de procaïnamide et N-acétylprocaïnamide (NAPA) ayant la formule (a) dans laquelle X = hydrogène ou acétyle; R1 = un groupe alkyle possédant 1 à 3 atomes de carbone; $i(m) = un nombre entier de 2 à 10; R2 = un groupe alkyle, cycloalkyle ou aryle possédant 2 à 10 atomes de carbone; Z = un poly(aminoacide); et $i(n) = 1 à $i(p) où $i(p) = masse moléculaire de Z/1000. Les dérivés comprennent des conjugués maléimidiques de protéines ou de poly(aminoacides), d'enzymes, de polypeptides donneurs d'enzymes et de substances de marquage. L'invention se rapporte également à de nouveaux intermédiaires d'haptène activés utilisés dans la préparation des conjugués, et aux procédés de synthèse des intermédiaires et des dérivés d'haptène.