(4-Amino-1-hydroxybutylidene)bisphosphonic acid (4-Amino-1-hydroxybutylidene)diphosphonic acid 121268-17-5 4-Amino-1-hydroxybutylidene-1,1-bis(phosphonic acid) 4-Amino-1-hydroxybutylidene-1,1-bisphosphonate 66376-36-1 ALENDRONIC ACID Acide alendronique [INN-French] Acido alendronico [INN-Spanish] Acidum alendronicum [INN-Latin] Alendronate Alendronic acid [BAN:INN] Arendal MK 217 Phosphonic acid, (4-amino-1-hydroxybutylidene)bis-