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'''Kokain''' ('''bénzoilmétilékgonin''') nyaéta [[alkaloid]] [[tropana]] [[kristalin]] nu diala tina [[daun]] [[tangkal]] [[koka]]<ref name= aggrawal1>Aggrawal, Anil. ''[[Narcotic Drugs]]''. National Book Trust, India (1995), p. 52-3. ISBN 81-237-1383-5.</ref>. Ngaran 'kokain' dicokot tina ngaran tangkalna ditambah ahiran alkaloid ''-in'' (''-ina'', numutkeun aturan baku), jadi ''kokain''. Ieu alkaloid téh [[stimulan]] [[sistem saraf puseur]], hususna salaku inhibitor ''reuptake'' [[dopamin]], [[norépinéfrin]], jeung [[serotonin]]. Kusabab mangaruhan jalur ''reward'' mésolimbik, kokain jadi matak [[kacanduan|nyandu]]<ref>{{cite journal |author=Fattore L, Piras G, Corda MG, Giorgi O |title=The Roman high- and low-avoidance rat lines differ in the acquisition, maintenance, extinction, and reinstatement of intravenous cocaine self-administration |journal=Neuropsychopharmacology |volume=34 |issue=5 |pages=1091–101 |year=2009 |month=April |pmid=18418365 |doi=10.1038/npp.2008.43 |url=}}</ref>.
 
kokain tré tré bon pouir toi
== Biosintésis ==
Sintésis jeung élusidasi '''kokain''' mitembeyan dipigawé ku [[Richard Willstätter]] taun [[1898]]<ref>{{cite journal |author=Humphrey AJ, O'Hagan D |title=Tropane alkaloid biosynthesis. A century old problem unresolved |journal=Nat Prod Rep |volume=18 |issue=5 |pages=494–502 |year=2001 |month=Oktober |pmid=11699882 |doi= |url=}}</ref> nu nyintésis kokain tina [[tropinon]]. Sanggeus éta, [[Robert Robinson (élmuwan)|Robert Robinson]] jeung Edward Leete ngembangkeun mékanismeu sintésisna.
 
== Watesan ==