Synonyms: Selagine;5,9-Methanocycloocta[b]pyridin-2(1H)-one,5- amino-11-ethylidene-5,6,9,10-tetrahydro-7- methyl-,(5R,9R,11E)-;Huperzine;Huperzine A;5,9-Methanocycloocta(b)pyridin-2(1H)-one, 5-amino-11-ethylidene-5,6,9,10-tetrahydro-7-methyl-, (5R-(5-alpha,9-beta,11E))-;5,9-Methanocycloocta(b)pyridin-2(1H)-one, 5-amino-11-ethylidene-5,6,9,10-tetrahydro-7-methyl-, (5R,9R,11E)-;5,9-Methanocycloocta[b]pyridine-2(1H)-one,5-amino-11-ethylid-Ene-5,6,9,10-tetrahydro-7-methyl-,[5R-(5a,9,11E)]-;Huperzine-A;Huperzine Serrate Extract ,Huperzine A 98%;Serrate Clubmoss extract;Verticine;