首页>
外国专利>
Process for the preparation of N - (alkyl - higher) derivatives of 4 - alkoxy - 4 - phenyl - piperidinas derivatives of 4 - alkoxy - 4 - fenilpiperidinas
Process for the preparation of N - (alkyl - higher) derivatives of 4 - alkoxy - 4 - phenyl - piperidinas derivatives of 4 - alkoxy - 4 - fenilpiperidinas