Noun
English Wikipedia has an article on:naphthylvinylpyridineWikipedia
naphthylvinylpyridine (plural naphthylvinylpyridines)
(organic chemistry) Any of several isomeric naphthylvinyl derivatives of pyridine, but especially 4-[(E)-2-naphthalen-1-ylethenyl]pyridine which has anticholinergic activity similar to that of atropine