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    • 1. 发明授权
    • Process and reagent for the determination of substrates or enzyme
activities
    • 用于测定底物或酶活性的方法和试剂
    • US5196314A
    • 1993-03-23
    • US661271
    • 1991-02-26
    • Michael-Harold TownJoachim SiedelJoachim Ziegenhorn
    • Michael-Harold TownJoachim SiedelJoachim Ziegenhorn
    • C07D257/04C12Q1/26C12Q1/28
    • C07D257/04C12Q1/26C12Q1/28C12Q2326/92Y10S435/805
    • A process for the determination of substrate or enzyme activities by the use of a redox reaction as a measurement reaction is carried out in the presence of one or more additionally added tetrazolium salts to remove disturbing substances. The tetrazolium salts have the formula ##STR1## in which R.sup.1 is a hydrogen atom, a carboxyl group or an alkyl, phenyl, nitrophenyl, dinitrophenyl, carboxyl-substituted phenyl or trialkylammoniumphenyl radical, R.sup.2 is a phenyl, nitrophenyl, biphenylyl or naphthyl radical, R.sup.3 is a phenyl, carboxyl-substituted phenyl, carboxyl-substituted hydroxyphenyl or dimethylthiazolyl radical, and A.sup..crclbar. is a monovalent anion. The formazanes formed by reaction with reducing substances do not absorb light at all, or absorb light only to a negligible extent, at the measurement wavelength of the redox reaction.New compounds included within the structural formula are those in which R.sup.1 is carboxy, phenyl, 2-carboxyphenyl, 4-carboxyphenyl, 2,4-dinitrophenyl or 4-trimethylammoniumphenyl, R.sup.2 is phenyl, and R.sup.3 is phenyl or 2-carboxyphenyl; with the proviso that, when R.sup.3 is unsubstituted phenyl or 2-carboxyphenyl, R.sup.1 may not be unsubstituted phenyl.
    • 通过使用氧化还原反应作为测量反应来测定底物或酶活性的方法在一种或多种另外加入的四唑鎓盐的存在下进行以除去扰乱物质。 所述四唑鎓盐具有其中R 1为氢原子,羧基或烷基,苯基,硝基苯基,二硝基苯基,羧基取代的苯基或三烷基铵苯基的式(I),R 2为苯基,硝基苯基,联苯基或 萘基,R3是苯基,羧基取代的苯基,羧基取代的羟基苯基或二甲基噻唑基,A( - )是一价阴离子。 通过与还原物质反应而形成的甲烷在氧化还原反应的测定波长下根本不吸收光,或仅吸收光可忽略的程度。 包括在结构式中的新化合物是其中R1是羧基,苯基,2-羧基苯基,4-羧基苯基,2,4-二硝基苯基或4-三甲基铵苯基,R2是苯基,R3是苯基或2-羧基苯基的化合物; 条件是当R3是未取代的苯基或2-羧基苯基时,R 1可以不是未被取代的苯基。
    • 2. 发明授权
    • Removal of interfering reducing substances with tetrazolium salts in
redox measurement reactions
    • 在氧化还原测定反应中用四唑盐除去干扰还原物质
    • US5013647A
    • 1991-05-07
    • US35617
    • 1987-04-03
    • Michael-Harold TownJoachim SiedelJoachim Ziegenhorn
    • Michael-Harold TownJoachim SiedelJoachim Ziegenhorn
    • C07D257/04C12Q1/26C12Q1/28G01N33/50
    • C07D257/04C12Q1/26C12Q1/28C12Q2326/92Y10S435/805
    • A process for the determination of substrate or enzyme activities by the use of a redox reaction as a measurement reaction is carried out in the presence of one or more additionally added tetrazolium salts to remove disturbing substances. The tetrazolium salts have the formula ##STR1## in which R.sup.1 is a hydrogen atom, a carboxyl group or an alkyl, phenyl, nitrophenyl, dinitrophenyl, carboxyl-substituted phenyl or trialkylammoniumphenyl radical, R.sup.2 is a phenyl, nitrophenyl, biphenylyl or naphthyl radical, R.sup.3 is a phenyl, carboxyl-substituted phenyl, carboxyl-substituted hydroxyphenyl or dimethylthiazolyl radical, and A.sup..crclbar. is a monovalent anion. The formazanes formed by reaction with reducing substances do not absorb light at all, or absorb light only to a negligible extent, at the measurement wavelength of the redox reaction. New compounds included within the formula are those in which R.sup.1 is carboxy, phenyl, 2-carboxy, phenyl, 2-carboxyphenyl, 4-carboxyphenyl, 2,4-dinitrophenyl or 4-trimethylammoniumphenyl, R.sup.2 is phenyl, and R.sup.3 is phenyl or 2-carboxyphenyl; with the proviso that, when R.sup.3 is unsubstituted phenyl or 2-carboxyphenyl, R.sup.1 may not be unsubstituted phenyl.
    • 通过使用氧化还原反应作为测量反应来测定底物或酶活性的方法在一种或多种另外加入的四唑鎓盐的存在下进行以除去扰乱物质。 所述四唑鎓盐具有其中R 1为氢原子,羧基或烷基,苯基,硝基苯基,二硝基苯基,羧基取代的苯基或三烷基铵苯基的式(I),R 2为苯基,硝基苯基,联苯基或 萘基,R3是苯基,羧基取代的苯基,羧基取代的羟基苯基或二甲基噻唑基,A( - )是一价阴离子。 通过与还原物质反应而形成的甲烷在氧化还原反应的测定波长下根本不吸收光,或仅吸收光可忽略的程度。 包括在式中的新化合物是其中R1是羧基,苯基,2-羧基,苯基,2-羧基苯基,4-羧基苯基,2,4-二硝基苯基或4-三甲基铵苯基,R2是苯基,R3是苯基或2 -carboxyphenyl; 条件是当R3是未取代的苯基或2-羧基苯基时,R 1可以不是未被取代的苯基。