4-fluoro-5-methoxy-dmt 4-fluoro-5-methoxy-dmt 4-fluoro-5-methoxy-n,n-dimethyltryptamine (4-f-5-meo-dmt) was first described by david e. nichols team in 2000. it is a potent 5-ht1a agonist. substitution with the 4-fluorine markedly increased 5-ht1a selectivity over 5-ht2a/2c receptors with potency greater than that of the 5-ht1a agonist 8-oh-dpat. 4-fluoro-5-methoxy-dmtidentifiers iupac name 4-fluoro-5-methoxy-n,n-dimethyltryptamine cas number312314-18-4 ypubchem cid10082834chemspider8258372chemical and physical dataformulac13h17fn2omolar mass236.290 g·mol−13d model (jsmol)interactive image smiles cn(c)ccc1=cnc2=c1c(=c(c=c2)oc)f inchi inchi=1s/c13h17fn2o/c1-16(2)7-6-9-8-15-10-4-5-11(17-3)13(14)12(9)10/h4-5,8,15h,6-7h2,1-3h3key:ctekfoktegqylo-uhfffaoysa-n (verify) the analog compound with the n,n-dialkyl substituents constrained into a pyrrolidine ring, is a slightly stronger agonist for the 5-ht1a receptor and retains the selectivity over the 5-ht2a/2c receptors.