three distinct , separate , chromatographic procedures are used to determine the labeling efficiencies of tc-99m-labeled sulfur colloid , maa , stannous chloride , phytate , dmsa , dtpa , pyrophosphate , diphosphonate , methylene diphosphonate , polyphosphate , and glucoheptonate .
C0012544
diphosphonate
C0066351
methylene diphosphonate