Ibandronate Sodium
[CAS]: 138926-19-9
[Chemical Name]: 1-Hydroxy-3-(methylpentylamino)propylidene bisphosphonic acid, monosodium salt, monohydrate

C₉H₂₂NO₇P₂Na·H₂O                        359.23

Ibandronic acid
CAS:114084-78-5
[Chemical Name]: 1-Hydroxy-3-(methylpentylamino)propylidene bisphosphonic acid

C₉H₂₅O₇NP₂                  319.23

[Intermediate ]
[CAS]: 625120-81-2
[Chemical Name]: 3-(N-methylpentylamino)propionic acid hydrochloride

C₉H₁₉NO₂·HCl                             209.5