diethyl 2-[2,2-bis(diethoxyphosphoryl)ethyl]propanedioate

4,4-bis(diethoxyphosphoryl)butanoic acid

1,1-双(二乙氧基磷酰基)乙烯

[5-[2-(bis-{2-[5,5-bis-(diethoxy-phosphoryl)-pentylamino]-ethyl}-amino)-ethylamino]-1-(diethoxy-phosphoryl)-pentyl]-phosphonic acid diethyl ester

tetraethyl (4-(1,3-dioxolan-2-yl)butylidene)bisphosphonate