Synonyms: 7aH-Naphtho[1',2':5,6]pyrano[3,2-c]pyridin-7a-ol,8,9,10,11,11a,12-hexahydro-8,10-dimethyl-, hydrochloride (9CI);8,9,10,11,11a,12-Hexahydro-8,10-dimethyl-7aH-naphtho[1',2':5,6]pyrano[3,2-c]pyridin-7a-olhydrochloride; Naranol hydrochloride; W 5494A