Compounds having the formula ##STR1## and acid-addition salts thereof, wherein R is hydrogen or alkyl of 1 to 3 carbon atoms and n is 0,1,2,3 or 4 are useful reagents for derivatizing organic compounds to permit the radioiodination of those compounds and their use as tracers in radioimmunoassays, or to permit their use as haptens.
具有以下式子的化合物##STR1##及其酸加成盐,其中R为氢或1到3个碳原子的烷基,n为0,1,2,3或4,可用作衍生有机化合物的试剂,以允许这些化合物的放射性
碘标记,并将它们用作放射免疫测定中的示踪剂,或允许它们用作半抗原。