I got one at 24 with 11+4+4 years of schooling. Most had it by 26-27 with a year or two more schooling in there somewhere. But an organic chemist prof told me

I got one at 24 with 11+4+4 years of schooling. Most had it by 26-27 with a year or two more schooling in there somewhere. But an organic chemist prof told me that one has to run n reactions to get out. You can spend the time to do 2/day or you can complain how long grad school is.