| Peyton Jacob III | |
|---|---|
| Other names | Peyton Jacob the Third; Peyton Jacob the 3rd | 
| Alma mater | University of California, Davis (B.S.); Purdue University (Ph.D.) | 
| Occupation(s) | Chemist; Pharmacologist | 
| Years active | 1972–present | 
| Organization | University of California, San Francisco | 
| Website | https://tobaccoresearchcenter.ucsf.edu/peyton-jacob-iii-phd https://cancer.ucsf.edu/people/jacob.peyton | 
Peyton Jacob III is an American chemist and pharmacologist who has studied nicotine, methamphetamine, hallucinogens, entactogens, and other psychoactive drugs. [1] [2] He is a researcher at the University of California, San Francisco (UCSF). [1] [2] Jacob extensively collaborated with and was close friends with Alexander Shulgin. [3] [2] Among many other contributions, they developed the Shulgin Rating Scale together [4] and methylone was first synthesized and described by the pair in the mid-1990s. [5] [6] [7]