(1-Hydroxy-2-(3-pyridyl)ethylidene)diphosphonic acid 105462-24-6 115436-72-1 Acide risedronique [INN-French] Acido risedronico [INN-Spanish] Acidum risedronicum [INN-Latin] NE 58019 Phosphonic acid, (1-hydroxy-2-(3-pyridinyl)ethylidene)bis- Risedronate Risedronic acid Risedronic acid [INN]