Compounds of general formula I wherein Fc and Fc' may be the same or different and are substituted ferrocenyl moieties having at least one ring substituent selected from sulfur- containing groups, phosphorus-containing groups, iodo, chloro, silyl, fluoroalkyl groups containing two or more fluorine atoms, heteroaryl, substituted phenyl, and cyano, wherein if present as sole substituent the cyano group is located on the proximal cyclopentadienyl ring; X is a spacer, Y is a spacer, Z is a spacer; and R is a linker group. Compound I may be used to make labelled substrates, functionalised compounds for making labelled substrates and may be used as labels in an electrochemical assay.
                            通式I的化合物中,Fc和Fc'可以相同也可以不同,并且它们是取代的ferrocenyl基团,至少有一个环取代基被选择为含
硫基团、含
磷基团、
碘、
氯、
硅基、含有两个或更多
氟原子的
氟代烷基基团、杂环芳基、取代苯基和
氰基,其中如果唯一存在的取代基是
氰基,则
氰基位于近端的
环戊二烯基环上;X是间隔基,Y是间隔基,Z是间隔基;而R是连接基团。化合物I可用于制备标记底物,用于制备标记底物的官能化化合物,并可用作电
化学测定中的标记物。