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A process for preparing levo- 4 - dimethylamino - 1, 2 - biphenyl - 3 - methyl - butane - 2 - ol and its esters with low molecular weight carboxylic acids
A process for preparing levo- 4 - dimethylamino - 1, 2 - biphenyl - 3 - methyl - butane - 2 - ol and its esters with low molecular weight carboxylic acids
