1-(2-(s-Hydrindacen-4-yl)ethyl)-4-methylpiperazine dihydrochloride hemihydrate 82875-65-8 Piperazine, 1-(2-(1,2,3,5,6,7-hexahydro-s-indacen-4-yl)ethyl)-4-methyl-, hydrochloride, hydrate (2:4:1) VUFB-12241