Clodronate10596-23-3100 % similar Clodronate sodium22560-50-556 % similar Disodium clodronate tetrahydrate88416-50-650 % similar (1-Hydroxyethylidene)-1,1-diphosphonic acid2809-21-439 % similar P,P′-(3-Amino-1-hydroxypropylidene)bis[phosphonic acid]40391-99-932 % similar Alendronic acid66376-36-130 % similar