organonitrogen compound huperzine A chebi_ontology PMID:12895686 242.14191 C\C=C1/[C@@H]2Cc3[nH]c(=O)ccc3[C@@]1(N)CC(C)=C2 ZRJBHWIHUMBLCN-YQEJDHNASA-N InChI=1S/C15H18N2O/c1-3-11-10-6-9(2)8-15(11,16)12-4-5-14(18)17-13(12)7-10/h3-6,10H,7-8,16H2,1-2H3,(H,17,18)/b11-3+/t10-,15+/m0/s1 A sesquiterpene alkaloid isolated from a club moss Huperzia serrata that has been shown to exhibit neuroprotective activity. (5R,9R,11E)-5-amino-11-ethylidene-7-methyl-5,6,9,10-tetrahydro-5,9-methanocycloocta[b]pyridin-2(1H)-one selagine Wikipedia:Huperzine_A PMID:24190328 Reaxys:3592896 242.31620 PMID:24129696 DrugBank:DB04864 (-)-selagine CHEBI:78330 PMID:24299147 PMID:23306162 CAS:102518-79-6 0 (-)-huperazine A PMID:24639880 PMID:24332448 C15H18N2O