Propagermanium

Propagermanium (INN), also known by a variety of other names including bis(2-carboxyethylgermanium) sesquioxide and 2-carboxyethylgermasesquioxane, is an organometallic compound of germanium^[2] that is sold as an alternative medicine. It is a polymeric compound with the formula ((HOOCCH₂CH₂Ge)₂O₃)_n.

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
ChEBI	CHEBI:32060
ChemSpider	74907
ECHA InfoCard	100.032.533
EC Number	235-800-0
KEGG	C13086 D01626
PubChem CID	83030
UNII	1Q2P9TO9Q7 Y
CompTox Dashboard (EPA)	DTXSID9065316
InChI InChI=1S/C6H10Ge2O7/c9-5(10)1-3-7(13)15-8(14)4-2-6(11)12/h1-4H2,(H,9,10)(H,11,12) Key: XEABSBMNTNXEJM-UHFFFAOYSA-N
SMILES C(C[Ge](=O)O[Ge](=O)CCC(=O)O)C(=O)O
Properties
Chemical formula	C6H10O7Ge2
Molar mass	339.4222 g/mol
Hazards
GHS labelling:[1]
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

The compound was first synthesized in 1967 at the Asai Germanium Research Institute^[3] in Japan. It is a water-soluble organogermanium compound used as raw material in nutritional supplements. The compound displays low toxicity in studies with rats.^[4]