If you wish to become a professor in Medical college, then you have to complete at least a PhD degree in Biochemistry/Chemistry/Clinical Chemistry/Nuclear Medicine etc which are allied and interdisciplinary subjects of Chemistry which you can do after your Masters. So if you wish to become a professor then you need to Complete a PhD at least and if you can you have to complete the Post Doc in order to be a professor at Government medical colleges.

For more information regarding Chemistry as a career, consider the link provided below:

https://www.careers360.com/courses/chemistry-course

I hope this helps. Wish you a great day!