Propagermanium (

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), also known by a variety of other names including bis(2-carboxyethylgermanium) sesquioxide and 2-carboxyethylgermasesquioxane, is an organometallic compound of germanium that is sold as an alternative medicine. It is a polymeric compound with the formula ((HOOCCH₂CH₂Ge)₂O₃)_''n''. The compound was first synthesized in 1967 at the Asai Germanium Research Institute in Japan. It is a water-soluble organogermanium compound used as raw material in health foods. The compound displays low toxicity in studies with rats.

References

Organogermanium compounds Germanium(IV) compounds Inorganic polymers Propionic acids Polyelectrolytes {{Alt-med-stub