122402-75-9 12758-40-6 14C-Proxigermanium 2-Carboxyethylgermasesquioxane 27031-31-8 3,3'-(1,3-Dioxo-1,3-digermoxanediyl)dipropionic acid 3,3'-(Dioxodigermoxanylene) dipropanoic acid 3,3'-(Germanoic anhydride) dipropanoic acid 31434-91-0 69992-83-2 83172-76-3 BRN 4141883 Bis-beta-carboxyethylgermanium sesquioxide CCRIS 5469 Carboxyethylgermanium sesquioxide Carboxylethylgermanium sesquioxide Dihydrogen bis(2-carboxylatoethyl)trioxodigermanate(2-) Dipropanoic acid germanium sequioxide EINECS 235-800-0 Ge 132 Germanate(2-), bis(2-carboxylatoethyl)trioxodi-, dihydrogen (9CI) NSC 267004 Propagermanium Propanoic acid, 3,3'-(1,3-dioxo-1,3-digermoxanediyl)bis- Propanoic acid, 3,3'-(oxybis(oxogermylene))bis- Propionic acid, 3,3'-(1,3-dioxodigermoxanylene)di- Proxigermanium SK 818