A detectable molecule of the formula A.sup.3 --(--X--R.sup.1 --E--Det.sup.b).sub.m where A.sup.3 is A.sup.2 or a polymer, where A.sup.3 has at least one modifiable reactive group selected from the group consisting of amino, hydroxy, cis OH, halides, aryl, imidazoyl, carbonyl, carboxy, thiol or a residue comprising an activated carbon; --X-- is selected from the group consisting of ##STR1## --R.sup.1 -- is ##STR2## or a C.sub.1 -C.sub.10 branched or unbranched alkyl or aralkyl, which may be substituted by --OH; --Y-- is a direct bond to --E--, or --Y-- is --E--R.sup.2 -- where R.sup.2 is a C.sub.1 -C.sub.10 branched or unbranched alkyl; Z.sub.a is chlorine, bromine or iodine; E is O, NH or an acyclic divalent sulfur atom; Det.sup.b is a chemical moiety capable of being detected, preferably comprising biotin or a metal chelator of the formula: ##STR3## or the 4-hydroxy or acyloxy derivative thereof, where R.sup.3 is C.sub.1 -C.sub.4 alkyl or CH.sub.2 COOM, M is the same or different and selected from the group consisting of hydrogen, a metal or non-metal cation or is C.sub.1 -C.sub.10 alkyl, aryl or aralkyl; and m is an integer from 1 to the total number of modified reactive groups on A.sup.3. The detectable molecules are useful in in virto or in vivo assays or therapy.
具有以下分子式的可检测分子:A.sup.3 --(--X--R.sup.1 --E--Det.sup.b).sub.m,其中A.sup.3是A.sup.2或聚合物,A.sup.3具有至少一种可修饰反应基团,所述反应基团选自
氨基,羟基,顺式OH,卤素,芳基,
咪唑基,羰基,羧基,
硫醇或包含活性碳的残基;--X--选自以下组成的群:##STR1## --R.sup.1 --是##STR2##或C.sub.1-C.sub.10支链或直链烷基或芳基烷基,可以被--OH取代;--Y--是直接连接到--E--的键或--Y--是--E--R.sup.2 --,其中R.sup.2是C.sub.1-C.sub.10支链或直链烷基;Z.sub.a是
氯,
溴或
碘;E是O,NH或无环二价
硫原子;Det.sup.b是可检测的
化学基团,优选包括
生物素或公式为:##STR3##或其
4-羟基或酰氧衍
生物,其中R.sup.3是C.sub.1-C.sub.4烷基或CH.sub.2 COOM,M相同或不同,选自氢,
金属或非
金属阳离子或C.sub.1-C.sub.10烷基,芳基或芳基烷基;m是1到A.sup.3上修饰反应基团总数的整数。该可检测分子在体外或体内测定或治疗中有用。