the effect of stone growth inhibitors ( citrate , pyrophosphate , ethane diphosphonate , methane diphosphonate , chondroitin sulfate a , chondroitin sulfate c , heparin and ribonucleic acid ) on crystal-membrane interactions of whewellite , weddellite , apatite , brushite , struvite , uric acid , monosodium urate and quartz ( control ) stones was quantitated .
C0012544
diphosphonate
C0066351
methane diphosphonate