n-methyl-pppa n-methyl-pppa n-methyl-pppa, or n-methyl-3-phenoxy-3-phenylpropan-1-amine, is a serotonin-norepinephrine reuptake inhibitor (snri) which was developed by eli lilly from diphenhydramine in the early 1970s while in search of new antidepressants, but was never marketed. it is closely related structurally to fluoxetine, atomoxetine, and nisoxetine. n-methyl-pppaclinical dataother namesdetrifluoromethylfluoxetineatc codenoneidentifiers iupac name n-methyl-3-phenoxy-3-phenyl-1-propanamine chemspider16340904chemical and physical dataformulac16h19nomolar mass241.334 g·mol−13d model (jsmol)interactive image smiles cnccc(oc1ccccc1)c2ccccc2 inchi inchi=1s/c16h19no/c1-17-13-12-16(14-8-4-2-5-9-14)18-15-10-6-3-7-11-15/h2-11,16-17h,12-13h2,1h3key:dmouapyfrklfho-uhfffaoysa-n