Patent ID: 8889921

Claim:
A method of preparing substantially pure scyllitol comprising the steps of: a) subjecting a first mixture comprising myo-inositol to a process that converts at least a portion of the myo-inositol to scyllitol, thereby forming a second mixture; b) converting the scyllitol in the second mixture to scyllitol diborate, thereby forming a third mixture; c) isolating the scyllitol diborate as a solid from the third mixture to provide isolated scyllitol diborate and a first inositol recovery mixture; d) converting the isolated scyllitol diborate to scyllitol, thereby forming a fourth mixture; e) isolating the scyllitol as a solid from the fourth mixture to provide isolated substantially pure scyllitol and a first diborate recovery mixture; f) combining the first inositol recovery mixture with additional myo-inositol to form a fifth mixture; g) repeating steps a) through c) on the fifth mixture to provide additional isolated scyllitol diborate and a second inositol recovery mixture; and h) repeating step d) with the additional isolated scyllitol diborate, thereby forming a sixth mixture, and repeating step e) with the sixth mixture to provide additional isolated substantially pure scyllitol and a second diborate recovery mixture.