1-(1-Adamantyl)-4-hydroxyethylpiperazine dihydrochloride 19984-41-9 Adamantane, 1-(1-(4-hydroxyethyl)piperazinyl)-, dihydrochloride Piperazine, 1-(1-adamantyl)-4-hydroxyethyl-, dihydrochloride Piperazineethanol, 4-(1-adamantyl)-, 2HCl Piperazineethanol, 4-(1-adamantyl)-, dihydrochloride