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Dissolve it in n-hexane (ca 10g in 150 mL) and keep at 0o for 24hours. Any 1-adamantanol present will separate. Filter and evaporate to dryness. The crystalline residue has m 31-32o and is recrystallised from n-hexane (90g/500mL), (IR (KBr):  max 1242, 1824 and 2340 cm-1). There should be no OH str band above 2500 cm-1. [Moroder et al. Hoppe-Seyler’s Z Physiol Chem 357 1647 1976, cf Haas et al. J Am Chem Soc 88 1988 1966.]