2-Aza-8-germaspiro[4.5]decane-2-propanamine, 8,8-diethyl-N,N-dimethyl-, dihydrochloride 41992-22-7 NSC192965 S 99 A SG SPRIOGERMANIUM HYDROCHLORIDE Spiro 32 Spirogermanium compound Spirogermanium hydrochloride