1-Oxa-3-azaspiro(4.5)decane-3-carboxylic acid, 2-oxo-, dimethylaminoethyl ester, hydrochloride 2-Oxo-1-oxa-3-azaspiro(4.5)decane-3-carboxylic acid dimethylaminoethyl ester hydrochloride 24247-74-3 Oxa-1 oxo-2 aza-3 (dimethylamino ethoxy carbonyl)-3 spiro(4.5)decane chlorhydrate