Guaiaconic acid A from guaiac resin
    8.
    发明授权
    Guaiaconic acid A from guaiac resin 失效
    愈创木酚酸

    公开(公告)号:US4297271A

    公开(公告)日:1981-10-27

    申请号:US115533

    申请日:1980-01-25

    摘要: The invention provides a diagnostic agent for the detection of occult blood in feces comprising hydrogen peroxide and, as a chromogen, guaiaconic acid A, optionally with a stabilizer. The invention provides, as a novel substance, guaiaconic acid A having a specific extinction E.sub.1 cm.sup.1% at 600 nm of at least 200, determined by the reaction with peroxidase and hydrogen peroxide, having infra-red bands at1600 cm.sup.-1 (m);1505 cm.sup.-1 (v.s.);1206 cm.sup.-1 (s;b);1115 cm.sup.-1 (m);1025 cm.sup.-1 (m); and1200 cm.sup.-1 (s;b)and having an R.sub.F value of 0.45 (toluene/dioxan/glacial acetic acid; 90:25:10 v/v/v).

    摘要翻译: 本发明提供了用于检测粪便中的潜血的诊断剂,其包含过氧化氢和作为色原的愈创木酚A,任选地具有稳定剂。 本发明提供作为新物质,通过与过氧化物酶和过氧化氢的反应确定的在600nm处具有至少200nm的特异性消光E1cm -1%的愈创酮酸A在1600cm -1(m)下具有红外线, ; 1505厘米-1(v.s.); 1206厘米-1(s; b); 1115cm-1(m); 1025厘米-1(m); 和1200cm-1(s; b),RF值为0.45(甲苯/二恶烷/冰醋酸; 90:25:10v / v / v)。

    Diagnostic agents for the detection of proteolytic enzymes
    10.
    发明授权
    Diagnostic agents for the detection of proteolytic enzymes 失效
    用于检测蛋白水解酶的诊断剂

    公开(公告)号:US4278763A

    公开(公告)日:1981-07-14

    申请号:US99180

    申请日:1979-11-30

    CPC分类号: C12Q1/37 C12Q2334/50

    摘要: The present invention provides a diagnostic agent for the detection of proteolytic enzymes, comprising an absorbent carrier, a film layer, a powder mixture, a lyophilisate, a solution or a reagent tablet, containing at least one chromogen and an appropriate buffer substance, wherein the chromogen used is an indoxyl- and/or thioindoxyl-amino acid ester and/or peptide ester of the general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which can be the same or different, are hydrogen or halogen atoms, lower alkyl, lower alkoxy, aryl, aralkyl, aralkoxy, hydroxyl, carboxy, carboxy lower alkoxy, aralkoxycarbonyl, aralkyloxycarbonyl lower alkoxy, nitro or lower acylamino radicals, whereby two adjacent substituents can also represent an optionally halogenated fused benzene ring, X is a sulphur atom or an imino group optionally substituted by a lower alkyl, aryl, aralkyl or acyl radical, A is an amino acid or peptide residue and B is a nitrogen protective group conventional in peptide chemistry or derived therefrom.The present invention also provides new compounds of the above-given general formula and processes for the preparation thereof.Furthermore, the present invention is concerned with the use of the compounds of the above-given general formula for the production of diagnostic agents for the detection of proteolytic enzymes.

    摘要翻译: 本发明提供了用于检测蛋白水解酶的诊断剂,其包含含有至少一种色原体和适当的缓冲物质的吸收剂载体,膜层,粉末混合物,冻干物,溶液或试剂片剂,其中 使用的色原是通式为:其中R 1,R 2,R 3和R 4可以相同或不同,为氢或卤素原子的通式如下的吲哚氧基和/或硫代吲哚氧基 - 氨基酸酯和/或肽酯: 低级烷基,低级烷氧基,芳基,芳烷基,芳烷氧基,羟基,羧基,羧基低级烷氧基,芳烷氧基羰基,芳烷氧基羰基低级烷氧基,硝基或低级酰基氨基,其中两个相邻的取代基也可以表示任选卤代的稠合苯环,X是硫 原子或任选被低级烷基,芳基,芳烷基或酰基取代的亚氨基,A是氨基酸或肽残基,B是肽化学中常规的氮保护基或 从其衍生。 本发明还提供了上述给出的通式的新化合物及其制备方法。 此外,本发明涉及上述给出的通式的化合物用于产生用于检测蛋白水解酶的诊断剂的用途。