the results of analysis of 99mtc-pyrophosphate ( 99mpyp ) , taken as a representative of the group of compounds having an organic p-o-p bond , and of the three diphosphonate compounds : methylene diphosphonate ( mdp ) , 2,3-dicarboxy propane diphosphonate ( dpd ) and ethane-1-hydroxy-1 , 1-diphosphonate ( ehdp ) , which differ in their chemical structure , are shown .
C0012544
diphosphonate
C0086268
ehdp