2-carboxyethylgermasesquioxane

Propagermanium

Names
IUPAC name 3-[(2-Carboxyethyl-oxogermyl)oxy-oxogermyl]propanoic acid
Other names proxigermanium, Ge-132, germanium sesquioxide, 2-carboxyethylgermasesquioxane, SK-818, bis(2-carboxyethylgermanium) sesquioxide
Identifiers
CAS Number	12758-40-6 Y
3D model (JSmol)	Interactive image
ECHA InfoCard	100.032.533
PubChem CID	83030
SMILES C(C[Ge](=O)O[Ge](=O)CCC(=O)O)C(=O)O
Properties
Chemical formula	C6H10O7Ge2
Molar mass	339.4222 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y  (what is YN ?)
Infobox references

Propagermanium (INN), 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.