Pierre-Joseph Pelletier (UK: /ˈpɛlətieɪ/ PEL-ə-tee-ay, US: /ˌpɛləˈtjeɪ/ PEL-ə-TYAY, French: [pjɛʁ ʒozɛf pɛltje];[1] 22 March 1788 – 19 July 1842) was a French chemist and pharmacist[2] who did notable research on vegetable alkaloids, and was the co-discoverer with Joseph Bienaimé Caventou of quinine, caffeine, and strychnine.

[3] He was also a collaborator and co-author with Polish chemist Filip Walter.

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