The - (14s) -3- methoxy-17-methyl-morphinan picrate its preparation and use

Dextromethorphan hydrobromide in the long-term commercial production process, requires a lot of the - (14S) -3- methoxy-17-methyl-morphinan quality aspects for applications, however, the - (14S) - 3-methoxy-17-methylmorphinan unstable, to facilitate storage, is not conducive to detection operation, so there is an urgent need to solve the practical problem is generated in the production process. In view of the present invention discloses an in solid form - (14S) -3- methoxy-17-methyl-morphinan picrate its preparation and use, i.e. for detecting dextromethorphan produced during synthesis in - (14S) -3- methoxy-17-methyl morphinan.