2-(N-(2-(Methylphenethylamino)propyl)propionamido)thiophene succinate 2599-38-4 N-(2-(Methylphenethylamino)propyl)-N-2-thienylpropionamide succinate Propionamide, N-(2-(methylphenethylamino)propyl)-N-2-thienyl-, succinate Succinic acid, compd. with N-(2-(methylphenethylamino)propyl)-N-2-thienylpropionamide