Labeled phosphonic acid compositions for investigations of in vivo deposits of calcium

摘要

The composition and methodology associated with the formulation of a halogenated phosphonic acid labeled in the ring moiety are disclosed having the formula: ##STR1## wherein R.sub.1 is aryl and is labeled with a halogen and R.sub.2 is hydrogen, alkyl, alkenyl, amino, benzyl, hydroxyl--CH.sub.2 PO.sub.3 H --CH.sub.2 CH.sub.2 PO.sub.3 H.sub. 2 and is labeled with halogen. The compositions are especially useful for scanning investigations of in vivo deposits of calcium.